Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hoc thien » hoc hien, hoc thieu, hoc thiet
doanh cua » doanh luan
hang cong » dang cong, hang nong, bang cong
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan lap » phan lap, thanh lap, dan lap

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 - canh ((doanh cua) or (doanh nhan)) hang cong dan chan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - canh ((doanh cua) OR (doanh nhan)) hang cong dan chan lap.
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - canh ((doanh cua) or (doanh nhan)) hang cong dan chan lap*.