Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
dinh lai » dinh lam, dinh lap, dinh tai
lang van » dang van, tang van, hoang van
lai cuu » lai cua, lai chau, lai cuoc
duc van » duc va, duc tan, duc manh
xuc van » luc van, vuc van, xuc ban
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
lang xa » lang ha, dang xay
cuu tre » cua tre, cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach y ((lang xa) OR (lang van)) hoi. hieu vu cham ((xuc van) or (duc van)) dinh lai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y ((lang xa) OR (lang van)) hoi. hieu vu cham ((xuc van) OR (duc van)) dinh lai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y ((lang xa) OR (lang van)) hoi. hieu vu cham ((xuc van) or (duc van)) dinh lai cuu tre*".