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, dinh lam
hanh va » hang va, hanh vi
hieu va » lieu va, hieu qua
hanh xa » hanh ma, hanh xu, canh xa
xuc va » duc va, tuc va, luc va
va cam » va cham, va cac, va cao

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 va cam xuc va ((hanh lam) OR (hanh va)) 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 va cam xuc va ((hanh lam) OR (hanh va)) 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 va cam xuc va ((hanh lam) OR (hanh va)) va triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach thu) or (sach thue)) hanh xa hoi. hieu va cam xuc va ((hanh lam) OR (hanh va)) va triet*.