Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
hang khong » hang thuong, hang khoa, hang nong
chu xanh » chieu xanh, chua xang, chuc danh
chu manh » ho manh, chu han, chu van
trinh va » trinh van, trinh vat, trinh ve
khong va » khong van, thong va, phong va
toan cau » toan cao, toan ban, toan tap
va hang » van hang, va nang, va lang
va toan » van toan, bai toan, tap toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu xanh) or (chu manh)) - canh trinh va hang khong va toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (chu manh)) - canh trinh va hang khong va toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) or (chu manh)) - canh trinh va hang khong va toan cau*.