Perhaps you should try some spelling variations:
sach thue » sach thieu, sach tham, cach thuc
va triet » va thiet, va trien, ve triet
sach thu » sach thieu, sach tham, cach thuc
hanh lam » thanh lap, hanh kem, hanh va
hanh xa » hanh va, hanh ma, hanh xu
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
xuc va » tuc va, luc va, xac va
lam va » nam va, dam va, lam ha

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 thu) OR (sach thue)) hanh xa hoi. hieu ve cac ((xuc va) or (duc va)) hanh lam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thu) OR (sach thue)) hanh xa hoi. hieu ve cac ((xuc va) OR (duc va)) hanh lam va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach thu) OR (sach thue)) hanh xa hoi. hieu ve cac ((xuc va) or (duc va)) hanh lam va triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach thu) OR (sach thue)) hanh xa hoi. hieu ve cac ((xuc va) or (duc va)) hanh lam va triet*.