Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
tham soc » tham nuoc, thai son, ham so
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
su sach » vu sach
nang ma » tang ma, sang ma, nang cao
so sach » so sanh, bo sach, co sach
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua

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)) y nang ma hoi. lieu va ((tham soc) or (cham soc)) va danh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) y nang ma hoi. lieu va ((tham soc) OR (cham soc)) va danh vi cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) y nang ma hoi. lieu va ((tham soc) or (cham soc)) va danh vi cua viet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) y nang ma hoi. lieu va ((tham soc) or (cham soc)) va danh vi cua viet*.