Perhaps you should try some spelling variations:
hanh thang » nhanh thang, thanh thang, hanh trang
theo chieu » ho chieu, theo chu
nhung cong » dung cong, thong cong, hang cong
thi chieu » thi chien, thi hieu, thi hien
thang va » hang va, trang va, thong va
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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: ((thi chieu) or (((theo chieu) OR (theo tieu)))) sang - hanh thang va nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi chieu) OR (((theo chieu) OR (theo tieu)))) sang - hanh thang va nhung cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thi chieu) or (((theo chieu) OR (theo tieu)))) sang - hanh thang va nhung cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: ((thi chieu) or (((theo chieu) OR (theo tieu)))) sang - hanh thang va nhung cong tac toan cau*.