Perhaps you should try some spelling variations:
sach thuc » cach thuc, sach thu, sach thue
hanh nam » thanh nam, hanh lam, hanh ngay
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
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

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 thuc hanh xa hoi. hieu ve cac ((xuc va) or (duc va)) hanh nam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thuc hanh xa hoi. hieu ve cac ((xuc va) OR (duc va)) hanh nam va triet.
• Adding a wildcard symbol may retrieve word variants: tu sach thuc hanh xa hoi. hieu ve cac ((xuc va) or (duc va)) hanh nam va triet*.