Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh nang » anh nang, ganh nang, hanh mang
nang quan » ban quan, nang suat
quan cong » qua cong, luan cong, quan dong
ho chieu » hoc thieu, doi chieu, mot chieu
dong tac » cong tac, dong tai, dong bac
khan cap » khan ap, than cap, khoan cam
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: ((ho chieu) or (theo chieu)) sang - hanh nang quan cong dong tac ((khan cap) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sang - hanh nang quan cong dong tac ((khan cap) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) sang - hanh nang quan cong dong tac ((khan cap) or (toan cau))*.