Perhaps you should try some spelling variations:
sach phu » sach phat, sach thue, sach phap
sach thu » sach thue, sach thieu, sach tham
thanh va » thanh van, thanh ha, thanh ve
hanh va » hang va, hanh vi
chua tu » chu tu, cua tu, chua cu
cao duc » dao duc, cao suc, giao duc
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ve cao » va cao, ve bao, ve cac

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

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