For English -- The film "The Pursuit of Happyness",why using "Happyness" but not "Happiness"?There is no "happyness" in any dictionary,how to explain for this spelling

whats the English for what's the English for study for the coming English Li xiang has tried his best to study for the English exam ,but f＿＿. Tom is s[ ] for the English lt's time for the english lesson. What's the English for ruler?翻译 what's the english for 秒杀? 作文the new plan for English What's the English for 长江?What's the English foWhat's the English for 长江?What's the English for 黄河? what's the English for this对,还是what's the English for it对? what's the English for this对,还是what's the English for it对? What is the best way for learning English?What is the best way for learning English? What's the secret for an English Woman what's the secret for an English woman the sandwich named for the English Earl of sandwich What's English for 四个现代化?What's the English for 四个现代化?哪个是对的? is,sharpener,the,what,English,pencil,for(?)连词成句 是What is the pencil sharpener for English?还是What is the English for pencil sharpener? the reason for learning English 与the reason of learning English 哪个正确?