Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hang tai » hang va, dung tai
cao xuc » cam xuc, cao duc, cao suc
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
va cao » va cac, va co, va dao
xuc va » duc va, tuc va, luc va
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 (nang x)) hoi. hieu va cao xuc va ((von tai) or (hang tai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y ((nang xa) OR (nang x)) hoi. hieu va cao xuc va ((von tai) OR (hang tai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y ((nang xa) OR (nang x)) hoi. hieu va cao xuc va ((von tai) or (hang tai)) cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach y ((nang xa) OR (nang x)) hoi. hieu va cao xuc va ((von tai) or (hang tai)) cua te*.