Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
doi chiet » doi chieu, doi viet, doi chinh
tranh va » tranh van, trang va, trinh va
cong cao » cong cau, cong cac, cong co
chat tap » chat tai, chat va, han tap
doi chi » doi khi
thai » tai, thi, hai

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

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