Perhaps you should try some spelling variations:
thien van » thi van
thanh vai » thanh hai, thanh van, thanh tai
lang van » dang van, tang van, hoang van
so sach » so sanh, bo sach, co sach
vai cua » dai cua, hai cua, lai cua
van cam » van nam, van lam, van cau
lang xa » lang ha, dang xay
cua tre » cua te, cuu tre, cua triet
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: so sach y ((lang xa) OR (lang van)) hoi. thien van cam ((duc va) or (tuc va)) thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ((lang xa) OR (lang van)) hoi. thien van cam ((duc va) OR (tuc va)) thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y ((lang xa) OR (lang van)) hoi. thien van cam ((duc va) or (tuc va)) thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: so sach y ((lang xa) OR (lang van)) hoi. thien van cam ((duc va) or (tuc va)) thanh vai cua tre*.