Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
hiem ngan » kim ngan, viem gan
cua thong » cua thuong, cua khong, suat thong
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, cong tan, huong dan
dan chon » dan chan, dan cho, dinh chon
chon cac » cho cac, thong cac, hoc cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hiem ngan) or (chieu sang)) - thanh trung ((cua thong) or (cua tong)) cong dan chon cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hiem ngan) OR (chieu sang)) - thanh trung ((cua thong) OR (cua tong)) cong dan chon cac.
• Adding a wildcard symbol may retrieve word variants: ho ((hiem ngan) or (chieu sang)) - thanh trung ((cua thong) or (cua tong)) cong dan chon cac*.