Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
sach thi » sach thu, sach tai, sach tham
hanh dam » thanh dam, hanh lam, hanh nam
va triet » va thiet, va trien, ve triet
hanh xa » hanh va, hanh ma, hanh xu
hieu ve » hieu va, hieu van
ve tham » va tham, ve cham, vi tham
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
dam va » dam van, nam va, dam 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 thi) or (sach thieu)) hanh xa hoi. hieu ve tham thuc va hanh dam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thi) OR (sach thieu)) hanh xa hoi. hieu ve tham thuc va hanh dam va triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach thi) or (sach thieu)) hanh xa hoi. hieu ve tham thuc va hanh dam va triet*.