Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
sach dao » lanh dao
lang van » dang van, tang van, hoang van
vai cua » dai cua, hai cua, lai cua
hieu va » lieu va, hieu qua
sach lo » sach doi, sach hoi, sach moi
van hoi » van hoa, van hoc, van hoe
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) OR (sach dao)) lang van hoi. 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) OR (sach dao)) lang van hoi. hieu va cac ((luc va) or (tuc va)) thanh vai cua te~".
• Adding a wildcard symbol may retrieve word variants: tu ((sach lo) OR (sach dao)) lang van hoi. hieu va cac ((luc va) or (tuc va)) thanh vai cua te*.