Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh van » trinh han, trinh quan, trinh toan
hoc hieu » hoc thieu, doc hieu, hoc dieu
van dung » van dong, xay dung, tin dung
cong van » cong vang, song van, cong tan
cong san » cong tac
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 hieu) or (hoc hien)) quang - hanh trinh van dung ((cong van) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hieu) OR (hoc hien)) quang - hanh trinh van dung ((cong van) OR (cong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) or (hoc hien)) quang - hanh trinh van dung ((cong van) or (cong san)) toan cau*.