Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
canh manh » lanh manh, canh tranh, cach mang
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap
manh va » hanh va, anh va, minh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((doi chi) OR (doi khi))) or (ho chieu)) xanh - canh manh va nhung cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((doi chi) OR (doi khi))) OR (ho chieu)) xanh - canh manh va nhung cong san toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((doi chi) OR (doi khi))) or (ho chieu)) xanh - canh manh va nhung cong san toan cao".
• Adding a wildcard symbol may retrieve word variants: ((((doi chi) OR (doi khi))) or (ho chieu)) xanh - canh manh va nhung cong san toan cao*.