Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
van quan » van ban
thanh vi » hanh vi, thanh va, thanh ve
van tham » van thanh, van tuan, van chat
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
tu sach » thu sach, su sach, te sach
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc 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: tu sach ky nang xa hoi. hieu ((van tham) or (van quan)) ((xuc va) OR (luc va)) thanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ((van tham) OR (van quan)) ((xuc va) OR (luc va)) thanh vi su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu ((van tham) or (van quan)) ((xuc va) OR (luc va)) thanh vi su triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ((van tham) or (van quan)) ((xuc va) OR (luc va)) thanh vi su triet*.