Perhaps you should try some spelling variations:
chieu tinh » lieu tinh, chau tinh, kieu tinh
trang van » trang va, trong van, tang van
dang cong » dung cong
tran van » luan van
cong tac » cong ty
tac pham » thuc pham, san pham
pham tap » pham tai, pha tap, phan 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 (trieu tinh)) - hanh ((tran van) or (trang van)) dang cong tac pham tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu tinh) OR (trieu tinh)) - hanh ((tran van) OR (trang van)) dang cong tac pham tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu tinh) OR (trieu tinh)) - hanh ((tran van) or (trang van)) dang cong tac pham tap*".