Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
chua xang » chua nang, chuc nang, chu bang
trinh vat » trinh van, trinh luat, sinh vat
nhung cau » chung cu, nhung bai, nhu cau
dung cong » dung trong
chu manh » ho manh, chu han, chu van
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chua xang) or (chu manh)) - canh trinh vat ((nhung cau) or (dung cong)) tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua xang) OR (chu manh)) - canh trinh vat ((nhung cau) OR (dung cong)) tan toan cao.
• Adding a wildcard symbol may retrieve word variants: theo ((chua xang) or (chu manh)) - canh trinh vat ((nhung cau) or (dung cong)) tan toan cao*.