Perhaps you should try some spelling variations:
sach thuy » sach thu, sach thue, sach tham
thuy hanh » thuc hanh, thuy anh, thuy canh
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
xac va » tac va, ac va, bac va
luc va » duc va, tuc va, loc 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 thuy hanh xa hoi. hieu ve cac ((xac va) or (luc va)) hanh nam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thuy hanh xa hoi. hieu ve cac ((xac va) OR (luc va)) hanh nam va triet.
• Adding a wildcard symbol may retrieve word variants: tu sach thuy hanh xa hoi. hieu ve cac ((xac va) or (luc va)) hanh nam va triet*.