Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, nhieu tang
trong quan » thong quan, tong quan, thong quang
hieu lang » hieu quang, nhieu tang, hieu van
trung nam » trung tam, trong nam, trung cap
dan trong » ban trong, dat trong, dao trong
quan toan » quang toan, quan doan, xuan toan
toan cau » toan cao, toan ban, toan tap
nam dan » nam dinh

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 nam dan trong quan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (hieu lang)) - thanh trung nam dan trong quan toan cau.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) or (hieu lang)) - thanh trung nam dan trong quan toan cau*.