Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
tu sach » thu sach, su sach, te sach
sach lo » sach dao, sach doi, sach hoi
vai cua » dai cua, hai cua, lai cua
van hoi » van hoc, van hoe, van loi
hieu va » lieu va, hieu qua
lo lang » o lang, so lang, le lang
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
cua te » cua tu

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: tu sach lo lang ((van hoi) OR (van hoa)). hieu va cac ((luc va) OR (tuc va)) thanh vai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach lo lang ((van hoi) OR (van hoa)). hieu va cac ((luc va) or (tuc va)) thanh vai cua te~".
• Adding a wildcard symbol may retrieve word variants: tu sach lo lang ((van hoi) OR (van hoa)). hieu va cac ((luc va) or (tuc va)) thanh vai cua te*.