Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hoc thien » hoc hien, hoc thieu, hoc thiet
va thong » va thuong, va phuong, he thong
dan chan » dan gian, van chat
tung va » trung va, tuong va, dung va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien hach - thanh tung va thong cong ((dan chan) or (dan ca)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - thanh tung va thong cong ((dan chan) OR (dan ca)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - thanh tung va thong cong ((dan chan) or (dan ca)) cao*.