Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
cong ngang » cong nhan, cong quang, cong nong
cong lang » cong vang, cong luong, cong quang
ho chieu » theo chieu, hoc thieu, doi chieu
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac
tung va » trung va, tuong va, dung va
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: ho chieu sach - thanh tung va hang ((cong ngang) or (cong lang)) ((than cap) OR (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh tung va hang ((cong ngang) OR (cong lang)) ((than cap) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh tung va hang ((cong ngang) or (cong lang)) ((than cap) OR (khan cap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh tung va hang ((cong ngang) or (cong lang)) ((than cap) OR (khan cap))*.