Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
ban tang » ban trang, ban hang, bai tang
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ba tang » bai tang, ha tang, ca tang
va cham » va chat, va tham
ve cham » ve chat, vu cham, ve chim
mai hoi » mai khoi, dai hoi, lai hoi
le cua » ly cua
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 sach ky nang mai hoi. hieu ((ve cham) or (va cham)) xuc ((ban tang) OR (ba tang)) le cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang mai hoi. hieu ((ve cham) OR (va cham)) xuc ((ban tang) OR (ba tang)) le cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang mai hoi. hieu ((ve cham) or (va cham)) xuc ((ban tang) OR (ba tang)) le cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang mai hoi. hieu ((ve cham) or (va cham)) xuc ((ban tang) OR (ba tang)) le cua te*.