Perhaps you should try some spelling variations:
ve triet » va trien, su triet
nam thuc » nam thuoc, am thuc, nam thu
hanh lam » thanh lap, hanh kem, hanh va
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
lam ve » la ve, lam vu, nam ve

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 hanh) or (thi thanh)) xa hoi. ((hieu ve) or (lieu va)) nam thuc va hanh lam ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thi hanh) OR (thi thanh)) xa hoi. ((hieu ve) OR (lieu va)) nam thuc va hanh lam ve triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((thi hanh) or (thi thanh)) xa hoi. ((hieu ve) or (lieu va)) nam thuc va hanh lam ve triet*.