Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
thi hanh » thi thanh
hanh lam » thanh lap, hanh kem, hanh va
va triet » va thiet, va trien, ve triet
su sach » vu sach
so sach » so sanh, bo sach, co sach
hanh xa » hanh va, hanh ma, hanh xu
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
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: ((su sach) or (so sach)) thi hanh xa hoi. hieu va tham thuc va hanh lam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) thi hanh xa hoi. hieu va tham thuc va hanh lam va triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) thi hanh xa hoi. hieu va tham thuc va hanh lam va triet*.