Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
bien tinh » bi tinh, yen tinh, ban tinh
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
cong tinh » cong trinh, cong vinh, long tinh
cua hang » cua dang, cua nhung, cua cong
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: doc ((diep tinh) or (bien tinh)) - hanh tranh cua hang cong tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((diep tinh) OR (bien tinh)) - hanh tranh cua hang cong tinh toan cao.
• Adding a wildcard symbol may retrieve word variants: doc ((diep tinh) or (bien tinh)) - hanh tranh cua hang cong tinh toan cao*.