Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
tranh cac » thanh cac, tranh cai, tranh chap
trinh cac » trinh cau, trinh chat, trinh chao
van phong » van dong, hai phong

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - canh ((tranh cac) OR (trinh cac)) phuong cong ((van ban) or (van phong)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh ((tranh cac) OR (trinh cac)) phuong cong ((van ban) OR (van phong)) tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - canh ((tranh cac) OR (trinh cac)) phuong cong ((van ban) or (van phong)) tu*".