Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
van hang » van khang, van hoang, van thang
tu cach » tu cac
va hang » va nang, va lang, va hanh
hai cua » thai cua, dai cua, hoi cua
so sach » so sanh, bo sach, co sach
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
bao tuc » bao thuc, dao tuc, bao luc
ve bao » te bao, va bao
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (so sach)) ky nang mai hoi. hieu ve bao tuc ((va hang) OR (van hang)) hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (so sach)) ky nang mai hoi. hieu ve bao tuc ((va hang) OR (van hang)) hai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (so sach)) ky nang mai hoi. hieu ve bao tuc ((va hang) OR (van hang)) hai cua te*".