Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
thong cong » trong cong, tong cong, phong chong
tung tuan » trung tuan, hung tuan, quang tuan
chu sach » cau sach, thu sach, chuc hach
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 ((chu sach) or (chieu sach)) - thanh tung tuan ((thong cong) OR (thong thong)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu sach) OR (chieu sach)) - thanh tung tuan ((thong cong) OR (thong thong)) dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu sach) or (chieu sach)) - thanh tung tuan ((thong cong) OR (thong thong)) dan than cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chu sach) or (chieu sach)) - thanh tung tuan ((thong cong) OR (thong thong)) dan than cau*.