Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, chau tinh, kieu tinh
luan nhung » luan chung, luan hung, quan nhung
nhung cong » dung cong, thong cong, hang cong
lieu tinh » trieu tinh, diep tinh, bien tinh
tang luan » dung luan
anh tang » anh bang, anh dang, anh nang
cong tac » cong ty
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu tinh) OR (lieu tinh)) - anh tang luan nhung cong tac ((than cap) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu tinh) OR (lieu tinh)) - anh tang luan nhung cong tac ((than cap) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu tinh) OR (lieu tinh)) - anh tang luan nhung cong tac ((than cap) or (khan cap))".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu tinh) OR (lieu tinh)) - anh tang luan nhung cong tac ((than cap) or (khan cap))*.