Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
sach ty » sach y, sach tu, sach thu
cam tuc » cam xuc, cam tu, nam thuc
tuc van » thuc van, truc van, tuc va
hang di » hang doi, hang vi, hang dien
qua cam » qua cham, qua cac, qua ca

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 ty ((nang xa) OR (lang xa)) hoi. hieu qua cam tuc van ((hang di) OR (hanh vi)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty ((nang xa) OR (lang xa)) hoi. hieu qua cam tuc van ((hang di) or (hanh vi)) cua triet~".
• Adding a wildcard symbol may retrieve word variants: toc sach ty ((nang xa) OR (lang xa)) hoi. hieu qua cam tuc van ((hang di) or (hanh vi)) cua triet*.