Perhaps you should try some spelling variations:
sach hay » sach han, sach ha, sach nay
hay lang » ha lang, tay lang, nhan lang
tdai cua » thai cua, tai cua, tai cuc
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
luc va » duc va, tuc va
loc va » hoc 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 hay lang xa hoi. hieu ve cham ((loc va) OR (luc va)) danh ((dai cua) or (tdai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hay lang xa hoi. hieu ve cham ((loc va) OR (luc va)) danh ((dai cua) OR (tdai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hay lang xa hoi. hieu ve cham ((loc va) OR (luc va)) danh ((dai cua) or (tdai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach hay lang xa hoi. hieu ve cham ((loc va) OR (luc va)) danh ((dai cua) or (tdai cua)) tre*.