Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
thanh tung » thanh cong
nhung cong » dung cong, thong cong, nhung don
tung tuan » trung tuan, hung tuan, quang tuan
hang cong » dang cong, hang nong, bang cong
dan hang » ban hang, van hang, dat hang
hang dau » hang va, hang tai

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 sach) OR (chinh sach)) - thanh tung tuan ((nhung cong) or (hang cong)) dan hang dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chinh sach)) - thanh tung tuan ((nhung cong) OR (hang cong)) dan hang dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) OR (chinh sach)) - thanh tung tuan ((nhung cong) or (hang cong)) dan hang dau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) OR (chinh sach)) - thanh tung tuan ((nhung cong) or (hang cong)) dan hang dau*.