Perhaps you should try some spelling variations:
thanh va » thanh van, hanh va, thanh ha
sach thu » sach thue, sach thieu, sach tham
thanh vi » hanh vi, thanh ve, nhanh vi
cao luc » bao luc, cao duc, cao suc
luc gia » luoc gia, duc gia, quoc gia
cuu tre » cua tre, cau tren, cau treo
sach ty » sach y, sach tu, xach tay
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
va cao » va cac, va co, va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ty) OR (sach thu)) lang xa hoi. hieu va cao luc gia ((thanh vi) or (thanh va)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach thu)) lang xa hoi. hieu va cao luc gia ((thanh vi) OR (thanh va)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) OR (sach thu)) lang xa hoi. hieu va cao luc gia ((thanh vi) or (thanh va)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) OR (sach thu)) lang xa hoi. hieu va cao luc gia ((thanh vi) or (thanh va)) cuu tre*.