Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thu sach » tu sach, thuat sach, thuoc sach
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
xuc van » duc van, luc van, vuc van
te sach » toc sach
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
vi cua » vai cua
di cua » dai cua, doi cua, de 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 (te sach)) ky dang ha noi. hieu va cam xuc van thanh ((vi cua) OR (di cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (te sach)) ky dang ha noi. hieu va cam xuc van thanh ((vi cua) OR (di cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (te sach)) ky dang ha noi. hieu va cam xuc van thanh ((vi cua) OR (di cua)) triet".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (te sach)) ky dang ha noi. hieu va cam xuc van thanh ((vi cua) OR (di cua)) triet*.