Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, kieu tinh
chau tinh » cuu tinh, ha tinh, cua tinh
hang cong » dang cong, hang nong, bang cong
tram van » tam van, trang van, tranh van
tran van » luan van
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat
phan tap » phan lap, han tap, pha tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu tinh) or (chau tinh)) - hanh ((tram van) OR (tran van)) hang cong tac phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu tinh) OR (chau tinh)) - hanh ((tram van) OR (tran van)) hang cong tac phan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu tinh) or (chau tinh)) - hanh ((tram van) OR (tran van)) hang cong tac phan tap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tinh) or (chau tinh)) - hanh ((tram van) OR (tran van)) hang cong tac phan tap*.