Perhaps you should try some spelling variations:
sach thue » sach thieu, sach tham, cach thuc
sach thu » sach thieu, sach tham, cach thuc
su triet » su tien, ve triet
hanh lam » thanh lap, hanh kem, hanh va
va hanh » van hanh, va thanh, va danh
su viet » so viet
hieu ve » hieu va, hieu van
hanh xa » hanh va, hanh ma, hanh xu
xuc va » duc va, tuc va, luc va
ve cam » ve cham, ve cac, va cam

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 ve cam xuc va hanh lam ((su triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thu) OR (sach thue)) hanh xa hoi. hieu ve cam xuc va hanh lam ((su triet) OR (su viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach thu) OR (sach thue)) hanh xa hoi. hieu ve cam xuc va hanh lam ((su triet) or (su viet))".
• Adding a wildcard symbol may retrieve word variants: tu ((sach thu) OR (sach thue)) hanh xa hoi. hieu ve cam xuc va hanh lam ((su triet) or (su viet))*.