Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
thi hanh » thi thanh
su triet » su tien, ve triet
hanh vai » hanh vi, hanh va, hanh tai
tu sach » su sach, te sach, tu cach
va hanh » van hanh, va thanh, va danh
su viet » so viet
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
hanh xa » hanh va, hanh ma, hanh xu
ve am » va am

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