Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
hieu lang » chieu sang, hieu quang, nhieu tang
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong san, cong tan, cong dong
phan cac » nhan cach, phan dau, phan van
phan lap » phan dau
ho hieu » ho chieu, hoi hieu, nho hieu
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 hieu lang - canh trinh va hang ((cong dan) or (huong dan)) ((phan cac) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - canh trinh va hang ((cong dan) OR (huong dan)) ((phan cac) OR (phan lap)).
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - canh trinh va hang ((cong dan) or (huong dan)) ((phan cac) or (phan lap))*.