Perhaps you should try some spelling variations:
ban thang » ban hang, ban thanh, ban than
cach dung » sach dung, cach mang, tac dung
thang loi » thanh loi, thang long, thanh moi
dua tren » dung tren
dung ban » dung san, dung dan, dong ban
thu sach » tu sach, thuat sach, thuoc sach
ve cach » va cach, ve cac, ve canh
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
cua tre » cuu tre, cua triet, cua thep
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang x hoi. hieu ve cach dung ban thang loi ((((cua tre) or (dua tren))) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang x hoi. hieu ve cach dung ban thang loi ((((cua tre) OR (dua tren))) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang x hoi. hieu ve cach dung ban thang loi ((((cua tre) or (dua tren))) or (cua te))*.