Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu lang » chieu sang, hieu quang, nhieu tang
trinh cua » tinh cua, trinh luat, trinh quan
cong nong » cong dong, cong trong, cong luong
cong cong » cong dong, trong cong, dung cong
son thanh » ban thanh, van thanh
thanh lap » thanh san, phan lap, thanh hai
ho hieu » ho chieu, hoi hieu, nho hieu

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 - hanh trinh cua ((cong nong) or (cong cong)) son thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh trinh cua ((cong nong) OR (cong cong)) son thanh lap.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh trinh cua ((cong nong) or (cong cong)) son thanh lap*.