Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
trung cam » trung tam, trung cap, trung nam
song dan » song danh, song van, cong dan
chan cau » can cau, chinh cau, nhanh cau
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sang) or (chiet tach)) - thanh trung cam nang song dan ((chan cau) OR (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chiet tach)) - thanh trung cam nang song dan ((chan cau) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) or (chiet tach)) - thanh trung cam nang song dan ((chan cau) OR (phan cau))".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (chiet tach)) - thanh trung cam nang song dan ((chan cau) OR (phan cau))*.