Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
va thai » van thai, va tai, va thi
va tham » van tham, va cham, va thanh
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
su sach » so sach, vu sach
tuc va » thuc va, truc va, tuc xa

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