Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
thanh tung » thanh cong
hoc thien » hoc hien, hoc thieu, hoc thiet
tung gian » duong gian, nung giang, tuong giai
gian hang » gian lang, gia hang, gan hang
hang cong » dang cong, hang nong, bang cong
cong dan » cong san, cong tan, huong dan
phan van » pham van, thanh van, luan van
phan lap » phan dau

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 gian hang cong dan ((phan van) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - thanh tung gian hang cong dan ((phan van) OR (phan lap))*.