Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
nhanh lang » nhanh quang, nhanh thang, nhan dang
hoc thien » hoc hien, hoc thieu, hoc thiet
hang cong » dang cong, hang nong, bang cong
cong san » cong tac
lang va » lang van, hang va, lang ha
va hang » van hang, va nang, va lang
than ma » than man, khan ma, nhan ma
than va » thanh va, nhan va, toan 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 - nhanh lang va hang cong san ((than ma) or (than va))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - nhanh lang va hang cong san ((than ma) OR (than va)).
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - nhanh lang va hang cong san ((than ma) or (than va))*.