Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, nhieu tang
tranh chap » tranh cua, trinh chat
hieu lang » hieu quang, nhieu tang, hieu van
tam trong » nam trong, lam trong, pham trong
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, thanh 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 sang) OR (hieu lang)) - thanh trung tam trong cong tan ((tranh chap) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (hieu lang)) - thanh trung tam trong cong tan ((tranh chap) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) OR (hieu lang)) - thanh trung tam trong cong tan ((tranh chap) or (than cap))".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) OR (hieu lang)) - thanh trung tam trong cong tan ((tranh chap) or (than cap))*.