Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh dung » thanh duong, thanh tung, thanh hung
hieu manh » chieu xanh, hieu nganh, dieu hanh
dan thanh » dang thanh, danh thanh, ban thanh
thanh lap » thanh san, phan lap, thanh hai
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((hieu manh) or (chieu sach)) - thanh dung ((cua dung) OR (qua dung)) cong dan thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((hieu manh) OR (chieu sach)) - thanh dung ((cua dung) OR (qua dung)) cong dan thanh lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((hieu manh) or (chieu sach)) - thanh dung ((cua dung) OR (qua dung)) cong dan thanh lap".
• Adding a wildcard symbol may retrieve word variants: toc ((hieu manh) or (chieu sach)) - thanh dung ((cua dung) OR (qua dung)) cong dan thanh lap*.