Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
cua trong » cua truong, cua trung, qua trong
khao cuu » cham cuu, chao chu, kho cua
cong dan » huong dan, cong dong, cong tac
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: khao cuu van - hanh trinh cua trong ((cong dan) OR (((cong tan) OR (cong san)))) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "khao cuu van - hanh trinh cua trong ((cong dan) or (((cong tan) OR (cong san)))) toan tap~".
• Adding a wildcard symbol may retrieve word variants: khao cuu van - hanh trinh cua trong ((cong dan) or (((cong tan) OR (cong san)))) toan tap*.