Perhaps you should try some spelling variations:
toc sach » hoc sach, thuoc sach, nuoc sach
doc sach » hoc sach, nuoc sach, dac sac
cam tuc » cam xuc, cam tu, nam thuc
anh tai » hanh tai, anh thai, vanh tai
van anh » van thanh, tuan anh, van minh
tuc van » thuc van, truc van, tuc va
qua cam » qua cham, qua cac, qua ca
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
cua tu » cua tuc, cua su, cua cu

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) or (doc sach)) ky lang xa hoi. hieu qua cam tuc van anh tai ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) ky lang xa hoi. hieu qua cam tuc van anh tai ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (doc sach)) ky lang xa hoi. hieu qua cam tuc van anh tai ((cua te) or (cua tu))*.