Perhaps you should try some spelling variations:
thanh te » thanh ve, thanh de, thanh le
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
dang cay » dang xay, dang ca, dung cay
hieu van » hieu va, thien van, lieu va
dang cac » dung cac, bang cac, dong cac
lam luc » lao luc, lam duoc
van lam » van nam
luc va » duc va, tuc va, loc va
te cua » tue cua, le cua, de cua
cua tu » cua tuc, cua su, cua cu

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: ((te sach) OR (toc sach)) ty ((dang cay) OR (dang cac)) phoi. hieu van lam luc va thanh te cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ty ((dang cay) OR (dang cac)) phoi. hieu van lam luc va thanh te cua tu~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ty ((dang cay) OR (dang cac)) phoi. hieu van lam luc va thanh te cua tu*.