Perhaps you should try some spelling variations:
hanh thang » nhanh thang, thanh thang, hanh trang
thi chieu » thi chien, thi hieu, theo chieu
thong tac » thong cac, tuong tac, thong tai
ho chieu » theo chieu, hoc thieu, doi chieu
thang va » hang va, trang va, thong va
va thong » va thuong, va phuong, he thong
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 (ho chieu)) sang - hanh thang va thong thong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi chieu) OR (ho chieu)) sang - hanh thang va thong thong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ((thi chieu) or (ho chieu)) sang - hanh thang va thong thong tac toan cau*.