Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, va tinh, le thanh
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
cua cu » cua chu, cua cau, cua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky dang xa hoi. hieu ve cam xuc ((va thanh) or (ban thanh)) dai cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky dang xa hoi. hieu ve cam xuc ((va thanh) OR (ban thanh)) dai cua cu.
• Adding a wildcard symbol may retrieve word variants: toc sach ky dang xa hoi. hieu ve cam xuc ((va thanh) or (ban thanh)) dai cua cu*.