Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, truong thanh
trung cap » truong cao, trung tam
cap nhung » cam nhung, vap nhung, dap nhung
cong tan » cong tac, cong san, cong ty
tran van » luan van

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 xanh) or (chieu sach)) - thanh trung cap nhung ((cong tan) OR (cong thanh)) tran van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sach)) - thanh trung cap nhung ((cong tan) OR (cong thanh)) tran van.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chieu sach)) - thanh trung cap nhung ((cong tan) OR (cong thanh)) tran van".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sach)) - thanh trung cap nhung ((cong tan) OR (cong thanh)) tran van*.