Perhaps you should try some spelling variations:
sach thuy » sach thu, sach thue, sach tham
thuy hanh » thuc hanh, thuy anh, thuy canh
hanh lam » thanh lap, hanh kem, hanh va
va triet » va thiet, va trien, cua triet
ve triet » va trien, su triet
tu sach » thu sach, su sach, te sach
hanh xa » hanh va, hanh ma, hanh xu
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
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 thuy hanh xa hoi. hieu ve cam ((xuc va) or (duc va)) hanh lam ((va triet) OR (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thuy hanh xa hoi. hieu ve cam ((xuc va) OR (duc va)) hanh lam ((va triet) OR (ve triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thuy hanh xa hoi. hieu ve cam ((xuc va) or (duc va)) hanh lam ((va triet) OR (ve triet))*".