Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh le » thinh le, thanh ve, thanh de
tu sach » thu sach, su sach, te sach
ty lang » tay lang, ty hang, tu lang
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
tuc ban » thuc ban, truc ban, tu ban
ve cam » ve cham, ve cac, va cam
le cua » ly cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((ty lang) OR (ty xang)) xa hoi. hieu ve cam tuc ban thanh le cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty lang) OR (ty xang)) xa hoi. hieu ve cam tuc ban thanh le cua vat".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty lang) OR (ty xang)) xa hoi. hieu ve cam tuc ban thanh le cua vat*.