Perhaps you should try some spelling variations:
vanh dai » van dai, vanh tai, lanh dao
tu sach » thu sach, su sach, te sach
thi van » thi lan, thi hanh, thi nang
van dau » van dao, phan dau
nang xa » lang xa, nang ma, mang xa
su tien » su kien, su hien, tu tieng
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
dai su » dai sua, dai so, dan su

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 y ((nang xa) OR (nang x)) hoi. thi van dau ((xuc va) OR (luc va)) vanh dai su tien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((nang xa) or (nang x)) hoi. thi van dau ((xuc va) OR (luc va)) vanh dai su tien~".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang xa) or (nang x)) hoi. thi van dau ((xuc va) OR (luc va)) vanh dai su tien*.