Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tieu sach » dien sach, te sach, viet sach
hang cong » dang cong, hang nong, bang cong
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan ban » tuan bang, toan ban, luan ban
va hang » van hang, va nang, va lang

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