Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh ket » thanh ke, hanh kem, thanh dat
va thanh » gia thanh, ban thanh, va tinh
nam thuc » nam thuoc, am thuc, nam thu
va trien » va truyen, va thiet, va tuyen
xay hoi » tay hoi, cay phoi, gay thoi
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
cam tuc » cam xuc, cam tu, dam thuc
ket va » ket van

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky dang ((xay hoi) OR (xa hoi)). lieu va ((cam tuc) or (nam thuc)) va thanh ket va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky dang ((xay hoi) OR (xa hoi)). lieu va ((cam tuc) OR (nam thuc)) va thanh ket va trien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky dang ((xay hoi) OR (xa hoi)). lieu va ((cam tuc) or (nam thuc)) va thanh ket va trien".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky dang ((xay hoi) OR (xa hoi)). lieu va ((cam tuc) or (nam thuc)) va thanh ket va trien*.