Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
luoc van » luoc can, luoc va, luc van
cap luoc » cap nuoc, ap luc, cap luat
hieu van » hieu va, thien van, lieu va
sang ma » tang ma, nang ma, sang tao
sach ty » sach y, sach tu, sach thu
van cap » van cau, van dap, van ca
nang xa » nang x, lang xa, nang ma
anh vi » anh va, anh ve, anh vu
cua cu » cua chu, cua cau, cua su

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 (sang ma)) hoi. hieu van cap luoc van ((anh vi) OR (hanh vi)) cua cu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty ((nang xa) or (sang ma)) hoi. hieu van cap luoc van ((anh vi) OR (hanh vi)) cua cu~".
• Adding a wildcard symbol may retrieve word variants: toc sach ty ((nang xa) or (sang ma)) hoi. hieu van cap luoc van ((anh vi) OR (hanh vi)) cua cu*.