Perhaps you should try some spelling variations:
nhanh mang » nhanh lang, nhanh quang, nhanh thang
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh mang » hanh trang, nhanh lang, thanh hang
hang cong » dang cong, hang nong, bang cong
cong tan » cong tac, cong san, cong thanh
va hang » van hang, va nang, va lang
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((thuc hanh) or (chieu xanh)) - ((hanh mang) OR (nhanh mang)) va hang cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((thuc hanh) OR (chieu xanh)) - ((hanh mang) OR (nhanh mang)) va hang cong tan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((thuc hanh) or (chieu xanh)) - ((hanh mang) OR (nhanh mang)) va hang cong tan van ban".
• Adding a wildcard symbol may retrieve word variants: theo ((thuc hanh) or (chieu xanh)) - ((hanh mang) OR (nhanh mang)) va hang cong tan van ban*.