Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chieu » doc hieu, mot chieu, thi chieu
ho chieu » theo chieu, hoc thieu, mot chieu
tranh va » tranh van, trang va, trinh va
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan ban » van 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 (ho chieu))) or (doi chi)) xanh - hanh tranh va nhung cong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((doi chieu) OR (ho chieu))) OR (doi chi)) xanh - hanh tranh va nhung cong van toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((doi chieu) OR (ho chieu))) or (doi chi)) xanh - hanh tranh va nhung cong van toan ban".
• Adding a wildcard symbol may retrieve word variants: ((((doi chieu) OR (ho chieu))) or (doi chi)) xanh - hanh tranh va nhung cong van toan ban*.