Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
toc sach » hoc sach, doc sach, thuoc sach
cham loc » cham soc, chon loc, cham o
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ly lang » ly hang, ly vang, le lang
cua tre » cua te, cuu tre, cua triet
loc va » hoc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (toc sach)) ly lang xa hoi. hieu ve cham loc va ((thanh van) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (toc sach)) ly lang xa hoi. hieu ve cham loc va ((thanh van) OR (hanh vi)) cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (toc sach)) ly lang xa hoi. hieu ve cham loc va ((thanh van) or (hanh vi)) cua tre*.