Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
cap dung » cao dung, chan dung, cach dung
cong san » cong tac
pham cac » phan cac, pham ca, pham can
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: doi ((chieu sach) or (chieu sang)) - thanh trung ((cap dung) or (ap dung)) cong san pham cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu sang)) - thanh trung ((cap dung) OR (ap dung)) cong san pham cac.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chieu sang)) - thanh trung ((cap dung) or (ap dung)) cong san pham cac*.