Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
nano cau » nang cau, bang cau, nano va
van hanh » van thanh, ban hanh, van anh
cau treo » cau theo, cau tren, cau triet
co luan » co quan, cu luan, o luan
hanh va » hang va, hanh vi
va cau » van cau, va cac, va dau
va co » vo co

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

• Performing a fuzzy search may retrieve terms with similar spellings: ve ((tac tu) or (cach thuc)) nano cau hoi. lieu va co luan van hanh va cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ve ((tac tu) OR (cach thuc)) nano cau hoi. lieu va co luan van hanh va cau treo.
• Adding a wildcard symbol may retrieve word variants: ve ((tac tu) or (cach thuc)) nano cau hoi. lieu va co luan van hanh va cau treo*.