Perhaps you should try some spelling variations:
thanh trung » thanh tung
chap thuong » chan thuong, phan thuong, pham thuong
thieu sang » chieu sang, thieu khang, thieu quang
trung chap » trung cap, trung ha, tranh chap
nhung cau » chung cu, nhung bai, nhu cau
cong tan » cong tac, cong san, cong thanh
hang cau » hang dau, hang ca, nang cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sang - thanh trung chap thuong ((cong tan) or (cong dong)) ((hang cau) OR (nhung cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - thanh trung chap thuong ((cong tan) OR (cong dong)) ((hang cau) OR (nhung cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu sang - thanh trung chap thuong ((cong tan) or (cong dong)) ((hang cau) OR (nhung cau))".
• Adding a wildcard symbol may retrieve word variants: toc thieu sang - thanh trung chap thuong ((cong tan) or (cong dong)) ((hang cau) OR (nhung cau))*.