Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
tieu hanh » tiem hanh, tien hanh, tieu danh
hang cong » dang cong, hang nong, bang cong
anh tang » anh bang, anh dang, anh nang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
va hang » van hang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tieu hanh) OR (dieu hanh)) - ((anh tang) or (hanh trang)) va hang cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu hanh) OR (dieu hanh)) - ((anh tang) OR (hanh trang)) va hang cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu hanh) OR (dieu hanh)) - ((anh tang) or (hanh trang)) va hang cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu hanh) OR (dieu hanh)) - ((anh tang) or (hanh trang)) va hang cong tac toan cau*.