Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
nang cong » nang song, dang cong, bang cong
tranh va » tranh van, trang va, trinh va
cong tan » cong tac, cong san, cong thanh
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
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 (chiet tach)) - canh tranh va nang cong tan ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - canh tranh va nang cong tan ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) OR (chiet tach)) - canh tranh va nang cong tan ((toan cau) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) OR (chiet tach)) - canh tranh va nang cong tan ((toan cau) or (toan cao))*.