Perhaps you should try some spelling variations:
ve chat » va chat, van chat
danh vi » hanh vi, dinh vi, danh di
sach ky » sac ky, sach y, sach ty
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
cao hoi » cau hoi, cao hoc, tao hoi
co hoi » co hoc, co loi
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
cua su » qua su

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 ky nang ((cao hoi) or (co hoi)). hieu ve chat ((xuc va) OR (tuc va)) danh vi cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ((cao hoi) OR (co hoi)). hieu ve chat ((xuc va) OR (tuc va)) danh vi cua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang ((cao hoi) or (co hoi)). hieu ve chat ((xuc va) OR (tuc va)) danh vi cua su".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ((cao hoi) or (co hoi)). hieu ve chat ((xuc va) OR (tuc va)) danh vi cua su*.