Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hinh tai » chinh tai, hinh thai, hinh bai
cam tuc » cam xuc, cam tu, nam thuc
qua cam » qua cham, qua cac, qua ca
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
sach v » sach va, sach y, sach 2
tuc va » thuc va, truc va, tuc xa
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 v ((nang xa) OR (lang xa)) hoi. hieu qua cam tuc va ((hinh tai) or (dung tai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach v ((nang xa) OR (lang xa)) hoi. hieu qua cam tuc va ((hinh tai) OR (dung tai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach v ((nang xa) OR (lang xa)) hoi. hieu qua cam tuc va ((hinh tai) or (dung tai)) cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach v ((nang xa) OR (lang xa)) hoi. hieu qua cam tuc va ((hinh tai) or (dung tai)) cua te*.