Perhaps you should try some spelling variations:
thiet danh » thien danh, thien anh, thien dang
hanh trinh » canh tranh, hanh chinh
hoc thiet » hoc thieu, hoc thuyet, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
cong dan » cong tan, huong dan, cong dong
cong tac » cong ty
toan cau » 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 thiet danh - hanh trinh cua nhung ((((cong dan) or (cong tac))) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet danh - hanh trinh cua nhung ((((cong dan) OR (cong tac))) OR (cong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thiet danh - hanh trinh cua nhung ((((cong dan) or (cong tac))) or (cong san)) toan cau*.