Perhaps you should try some spelling variations:
thien van » thi van
toc sach » hoc sach, doc sach, thuoc sach
cam thue » cam thu, nam thue, cam thiet
lam thue » nam thue, luat thue, lam thuoc
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
vi cuu » vi luu, vinh cuu

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang xa hoi. thien van ((cam thue) OR (lam thue)) va dan vi cuu tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach y nang xa hoi. thien van ((cam thue) OR (lam thue)) va dan vi cuu tre*.