Perhaps you should try some spelling variations:
thien chanh » thien thanh, thien chinh, hien hanh
thien danh » thien anh, thien dang, thien thanh
hanh trinh » canh tranh, hanh chinh
trinh vat » trinh van, trinh luat, sinh vat
vat dung » van dung, va dung, viet dung
cong dan » cong san, cong tan, cong dong
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 danh) or (thien chanh)) - hanh trinh vat dung ((cong dan) or (huong dan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien danh) OR (thien chanh)) - hanh trinh vat dung ((cong dan) OR (huong dan)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien danh) or (thien chanh)) - hanh trinh vat dung ((cong dan) or (huong dan)) toan cao*.