Perhaps you should try some spelling variations:
thien van » thi van
toc sach » hoc sach, thuoc sach, nuoc sach
doc sach » hoc sach, nuoc sach, dac sac
dinh lai » dinh lam, dinh lap, dinh tai
lai cho » lai chau, bai choi, lai cuoc
van cam » van nam, van lam, van cau
xang xa » lang xa, mang xa, ang xa
cho tre » cho thue, khoe tre
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (doc sach)) ty xang xa hoi. thien van cam ((xuc va) or (luc va)) dinh lai cho tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) ty xang xa hoi. thien van cam ((xuc va) OR (luc va)) dinh lai cho tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (doc sach)) ty xang xa hoi. thien van cam ((xuc va) or (luc va)) dinh lai cho tre*".