Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
thanh dung » thanh duong, thanh tung, thanh hung
hoc thien » hoc hien, hoc thieu, hoc thiet
van thanh » ban thanh, van tuan
dung van » duong van, dung va, dang van
van dung » van dong, xay dung, tin dung
dan than » dan chan, ban than, van than

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 dung van dung trong ((van thanh) or (dan than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - thanh dung van dung trong ((van thanh) OR (dan than)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - thanh dung van dung trong ((van thanh) or (dan than)) cao*.