Perhaps you should try some spelling variations:
sach tham » sach nha
va triet » va thiet, va trien, ve triet
hanh dam » thanh dam, hanh lam, hanh nam
sach thu » sach thue, sach thieu, cach thuc
va hanh » van hanh, va thanh, va danh
hanh xa » hanh va, hanh ma, hanh xu
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
dam va » dam van, nam va, dam ha
ve cam » ve cham, va cam, ve cai

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 tham) or (sach thu)) hanh xa hoi. hieu ((ve cam) or (ve cac)) xuc va hanh dam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tham) OR (sach thu)) hanh xa hoi. hieu ((ve cam) OR (ve cac)) xuc va hanh dam va triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach tham) or (sach thu)) hanh xa hoi. hieu ((ve cam) or (ve cac)) xuc va hanh dam va triet*.