Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
gian lang » gian dan
quan van » luan van, quan va, quan luan
cong tam » cong tac, cong tan, cong nam
tam toan » tap toan, tam than, pham toan
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: ((doi chieu) or (hoc thieu)) xanh - hanh trinh ((quan van) or (gian lang)) cong tam toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc thieu)) xanh - hanh trinh ((quan van) OR (gian lang)) cong tam toan cao.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (hoc thieu)) xanh - hanh trinh ((quan van) or (gian lang)) cong tam toan cao*.