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