Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
sach ty » sach y, sach tu, sach thu
nang xa » lang xa, nang ma, mang xa
qua cao » qua cac, qua ca, qua cai
cao suc » cao su, cao duc
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
suc 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 ty ((nang xa) or (nang x)) hoi. hieu qua cao suc va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty ((nang xa) OR (nang x)) hoi. hieu qua cao suc va hanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: toc sach ty ((nang xa) or (nang x)) hoi. hieu qua cao suc va hanh vai cua te*.