Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
su triet » su viet, su tien, ve triet
so dang » su dang, so dan, xo dang
so dung » su dung, hoc dung, noi dung
xay hoi » xa hoi, tay hoi, cay phoi
thi van » thi lan, thi hanh, thi nang
nam xua » nam cua, nam mua, nam qua
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
xua va » xuat va, vua va, sua va
vi su » va su, ve su, ki su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((so dang) or (so dung)) xay hoi. thi van nam xua va danh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((so dang) OR (so dung)) xay hoi. thi van nam xua va danh vi su triet.
• Adding a wildcard symbol may retrieve word variants: thu sach ((so dang) or (so dung)) xay hoi. thi van nam xua va danh vi su triet*.