Perhaps you should try some spelling variations:
hanh tranh » hanh trinh, hanh trang, lanh tranh
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
cong cong » cong dong, trong cong, dung cong
cong ban » cong bang, cong san, cong tan
ban nang » ban hang, van nang, ban dang

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

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