Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tieu sach » dien sach, te sach, viet sach
tranh cuu » tranh cua, trinh cuu, tranh chua
thong van » trong van, thong quan, truong van
cuu tong » cuu cong, cuu tinh, huu tung
thong va » thong cua, truong va, thong qua
cuc » cuoc, chuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tieu sach) OR (chieu sach)) - canh tranh cuu tong ((thong van) or (thong va)) tai cuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu sach) OR (chieu sach)) - canh tranh cuu tong ((thong van) OR (thong va)) tai cuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu sach) OR (chieu sach)) - canh tranh cuu tong ((thong van) or (thong va)) tai cuc".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu sach) OR (chieu sach)) - canh tranh cuu tong ((thong van) or (thong va)) tai cuc*.