Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
su triet » su tien, ve triet
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
su viet » so viet
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach y nang xa hoi. ((hieu ve) or (hieu qua)) cam xuc va hanh va ((su triet) OR (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang xa hoi. ((hieu ve) OR (hieu qua)) cam xuc va hanh va ((su triet) OR (su viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y nang xa hoi. ((hieu ve) or (hieu qua)) cam xuc va hanh va ((su triet) OR (su viet))".
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang xa hoi. ((hieu ve) or (hieu qua)) cam xuc va hanh va ((su triet) OR (su viet))*.