Perhaps you should try some spelling variations:
thue nang » thien nang, thuat nang, thi nang
toc sach » hoc sach, thuoc sach, nuoc sach
doc sach » hoc sach, nuoc sach, dac sac
dinh vi » dinh ve, dinh viet, dinh tri
va dinh » van dinh, va kinh, va tinh
du tren » dua tren, dau tren, duc tren
nang xa » nang x, lang xa, nang ma
dam tu » nam tu, cam tu, dam thuc
tam tu » nam tu, cam tu, tam thuc
vi du » vi dum, va du, ve du

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) thue nang xa hoi. hieu qua ((dam tu) OR (tam tu)) va dinh vi du tren~.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (doc sach)) thue nang xa hoi. hieu qua ((dam tu) or (tam tu)) va dinh vi du tren*.