Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
hang dong » hang nong, hang cong, hanh dong
cua hang » cua dang, cua nhung, cua cong
dong tac » cong tac, dong tai, dong bac
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: theo chieu sang - hanh tranh cua hang dong tac ((toan cao) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - hanh tranh cua hang dong tac ((toan cao) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - hanh tranh cua hang dong tac ((toan cao) or (van ban))*.