Perhaps you should try some spelling variations:
thanh trung » thanh tung
dung phuong » dung thuong, bang phuong, dung chung
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
phuong dan » phuong danh, phuong doan, huong dan
trung cap » truong cao, trung tam
cap dung » ap dung, cao dung, chan dung
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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 cap dung phuong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chiet tach)) - thanh trung cap dung phuong dan than cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (chiet tach)) - thanh trung cap dung phuong dan than cau*.