Perhaps you should try some spelling variations:
thien chanh » thien thanh, thien chinh, hien hanh
hanh trinh » canh tranh, hanh chinh
thien anh » thien danh, tien anh, thien thanh
trinh cua » tinh cua, trinh luat, trinh quan
nong san » cong san, dong san, nong dan
cong tac » cong ty
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien chanh) or (thien anh)) - hanh trinh cua cong ((nong san) or (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien chanh) OR (thien anh)) - hanh trinh cua cong ((nong san) OR (cong tac)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien chanh) or (thien anh)) - hanh trinh cua cong ((nong san) or (cong tac)) toan cao*.