Perhaps you should try some spelling variations:
thanh va » thanh van, hanh va, thanh ha
sach thu » sach thue, sach thieu, sach tham
cac luc » coc luc, cac nuoc, cac cuoc
cau luc » cau truc, cau phuc
chu tre » cho tre, chu tri, cuu tre
sach ty » sach y, sach tu, xach tay
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
va chu » va che, va cau, va chi

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)) nang xa hoi. hieu ve ((cac luc) or (cau luc)) gia thanh va chu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach thu)) nang xa hoi. hieu ve ((cac luc) OR (cau luc)) gia thanh va chu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) OR (sach thu)) nang xa hoi. hieu ve ((cac luc) or (cau luc)) gia thanh va chu tre*".