Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
dang xay » dang van, van xay
vu sach » vu bach, su sach, vu khach
thi van » thi lan, thi hanh, thi nang
vai cua » dai cua, hai cua, lai cua
van cam » van nam, van lam, van cau
lang xa » lang ha, lang van
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y ((lang xa) OR (dang xay)) hoi. thi van cam ((xuc va) or (tuc va)) thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y ((lang xa) OR (dang xay)) hoi. thi van cam ((xuc va) OR (tuc va)) thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y ((lang xa) OR (dang xay)) hoi. thi van cam ((xuc va) or (tuc va)) thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach y ((lang xa) OR (dang xay)) hoi. thi van cam ((xuc va) or (tuc va)) thanh vai cua tre*.