Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cham duc » pham duc, cham soc, phan duc
pham duy » pham duc
sach ly » sach y, sach lo, sach ty
ly hang » ly quang
hang xa » hoang xa, hang va, hang ca
hieu va » lieu va, hieu qua
va hang » van hang, va nang, va lang
hang vi » hang va, hanh vi, hang di
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 ly hang xa hoi. hieu va ((cham duc) or (pham duy)) va hang vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ly hang xa hoi. hieu va ((cham duc) OR (pham duy)) va hang vi cua te.
• Adding a wildcard symbol may retrieve word variants: toc sach ly hang xa hoi. hieu va ((cham duc) or (pham duy)) va hang vi cua te*.