Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cham duc » pham duc, cham soc, pham duy
nang xa » nang x, nang ma, ang xa
mang xa » mang may, dang xay, mang cua
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
vi cua » vai cua, di 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: toc sach y ((((nang xa) or (mang xa))) or (lang xa)) hoi. hieu ve cham duc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y ((((nang xa) OR (mang xa))) OR (lang xa)) hoi. hieu ve cham duc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: toc sach y ((((nang xa) or (mang xa))) or (lang xa)) hoi. hieu ve cham duc va hanh vi cua te*.