Perhaps you should try some spelling variations:
tran chau » tranh chap, tran huu
theo rau » theo dau, theo mau, theo chu
rau sach » cau sach, hau sach, khau sach
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, cong dong
tran cao » toan cao, trang cho, tranh cac
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 rau sach - canh tranh va nang ((cong dan) OR (huong dan)) ((tran cao) or (tran chau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo rau sach - canh tranh va nang ((cong dan) OR (huong dan)) ((tran cao) OR (tran chau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo rau sach - canh tranh va nang ((cong dan) OR (huong dan)) ((tran cao) or (tran chau))".
• Adding a wildcard symbol may retrieve word variants: theo rau sach - canh tranh va nang ((cong dan) OR (huong dan)) ((tran cao) or (tran chau))*.