Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
ban thanh » ban hanh, ban hang
thu sach » tu sach, thuat sach, thu hoach
xang xa » lang xa, mang xa, ang xa
hieu va » lieu va, hieu qua
cac toc » cac toi, cac nuoc, cac thoi
toc ban » toc san, toc ba, hoc ban
via cua » gia cua, gian cua, giau cua
y xang » ty xang
ca cua » co cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) OR (thuoc sach)) y xang xa hoi. hieu va cac toc ban thanh ((via cua) or (ca cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuoc sach)) y xang xa hoi. hieu va cac toc ban thanh ((via cua) OR (ca cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (thuoc sach)) y xang xa hoi. hieu va cac toc ban thanh ((via cua) or (ca cua)) te".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (thuoc sach)) y xang xa hoi. hieu va cac toc ban thanh ((via cua) or (ca cua)) te*.