Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
lieu tinh » trieu tinh, diep tinh, bien tinh
trinh cua » tinh cua, trinh luat, trinh quan
cua thong » cua thuong, cua khong, cua tong
hoc lieu » hoc dieu, hoc sieu, hoc tieu
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc lieu tinh - hanh trinh cua thong ((cong tan) or (huong dan)) ((than cap) or (thanh san))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc lieu tinh - hanh trinh cua thong ((cong tan) OR (huong dan)) ((than cap) OR (thanh san)).
• Adding a wildcard symbol may retrieve word variants: hoc lieu tinh - hanh trinh cua thong ((cong tan) or (huong dan)) ((than cap) or (thanh san))*.