Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
dua tren » dung tren
xanh di » danh di, vanh dai, xanh tai
cua tre » cuu tre, cua triet, cua thep
va xanh » va danh, va hanh, va anh
cao suc » cao su, cao duc
qua cao » qua cac, qua ca, qua cai
nang xa » nang x, lang xa, nang ma
suc va » duc va, tuc va, luc va
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
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 hoi. hieu qua cao suc va xanh di ((((cua tre) or (dua tren))) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach v nang xa hoi. hieu qua cao suc va xanh di ((((cua tre) OR (dua tren))) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: toc sach v nang xa hoi. hieu qua cao suc va xanh di ((((cua tre) or (dua tren))) or (cua te))*.