Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
sinh cua » manh cua, dinh cuu, sinh va
gia hanh » gia thanh, giao hanh, gia anh
dang xay » dang van, van xay
duc gia » quoc gia
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
lang xa » lang ha, lang van
vi cuu » vi luu, vinh cuu

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 y ((lang xa) OR (dang xay)) hoi. hieu ve pham duc gia hanh ((vi cuu) OR (sinh cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y ((lang xa) OR (dang xay)) hoi. hieu ve pham duc gia hanh ((vi cuu) or (sinh cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach y ((lang xa) OR (dang xay)) hoi. hieu ve pham duc gia hanh ((vi cuu) or (sinh cua)) tre*.