Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua hang » cua dang, cua nhung, cua ban
cong tac » cong ty
tac va » tac da, tac xa, tuc va
va ban » van ban, va bai, va bao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (chieu sang)) - hanh trinh ((cua hang) OR (cua cong)) cong tac va ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu sang)) - hanh trinh ((cua hang) OR (cua cong)) cong tac va ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (chieu sang)) - hanh trinh ((cua hang) OR (cua cong)) cong tac va ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu sang)) - hanh trinh ((cua hang) OR (cua cong)) cong tac va ban*.