Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
phoang van » phong van, phung van, thong van
tranh cua » doanh cua, manh cua
hoang van » hang va
cua nong » cua cong, cuu nong, cua dong
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 ((chieu sach) OR (chieu sang)) - canh tranh cua nong ((hoang van) or (phoang van)) tai cuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - canh tranh cua nong ((hoang van) OR (phoang van)) tai cuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) OR (chieu sang)) - canh tranh cua nong ((hoang van) or (phoang van)) tai cuc".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) OR (chieu sang)) - canh tranh cua nong ((hoang van) or (phoang van)) tai cuc*.