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
tong cong » trong cong, cong cong, dung cong
nhung bi » nhung bai, nhung gi
tran cao » toan cao, tran chau, trang cho
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 bi) or (tong cong)) tan tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) xanh - hanh tranh cua ((nhung bi) OR (tong cong)) tan tran cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doi chi)) xanh - hanh tranh cua ((nhung bi) or (tong cong)) tan tran cao".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doi chi)) xanh - hanh tranh cua ((nhung bi) or (tong cong)) tan tran cao*.