Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
van thuong » va thuong, van chuong, van phuong
phuong van » phung van, phuong lan, phuong va
doi chieu » doc hieu, doi chi, mot chieu
trinh van » trinh han, trinh quan, trinh toan
phong van » phung van, thong van, phong va
ho chieu » theo chieu, hoc thieu, mot chieu
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (doi chieu)) xanh - canh trinh van thuong ((phuong van) OR (phong van)) than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - canh trinh van thuong ((phuong van) OR (phong van)) than ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doi chieu)) xanh - canh trinh van thuong ((phuong van) OR (phong van)) than ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) xanh - canh trinh van thuong ((phuong van) OR (phong van)) than ban*.