Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
cap dung » cao dung, chan dung, cach dung
cong van » cong vang, cong san, song van
van than » van thanh, van thang, van tuan
than cau » toan cau, phan cau, than cap
ap dung » xay dung, van dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (chiet tach)) - thanh trung ((cap dung) or (ap dung)) cong van than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chiet tach)) - thanh trung ((cap dung) OR (ap dung)) cong van than cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chiet tach)) - thanh trung ((cap dung) or (ap dung)) cong van than cau*.