Perhaps you should try some spelling variations:
canh trinh » canh tranh, canh tinh, anh trinh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan dau » phan tu, hang dau

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 (toc thieu)) xanh - ((canh trinh) OR (hanh trinh)) va nhung cong dan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (toc thieu)) xanh - ((canh trinh) OR (hanh trinh)) va nhung cong dan phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (toc thieu)) xanh - ((canh trinh) OR (hanh trinh)) va nhung cong dan phan dau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (toc thieu)) xanh - ((canh trinh) OR (hanh trinh)) va nhung cong dan phan dau*.