Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhanh hang » nhanh thang, nhanh lang, thanh hang
hieu manh » chieu xanh, hieu nganh, dieu hanh
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan ban » van ban
va hang » van hang, va lang, va hanh
va nang » van nang, da nang, cam nang

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