Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chieu » doc hieu, ho chieu, mot chieu
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cuong tap » luong tap, cong tac, luong tai
cong tap » cong tac, cong tan, tong tap
toan tap » toan ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) OR (doi chi)) xanh - hanh tranh cua nhung ((cong tap) or (cuong tap)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) xanh - hanh tranh cua nhung ((cong tap) OR (cuong tap)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doi chi)) xanh - hanh tranh cua nhung ((cong tap) or (cuong tap)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doi chi)) xanh - hanh tranh cua nhung ((cong tap) or (cuong tap)) toan tap*.