Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
cac truc » cac tru, cac trung, sach truc
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua
te cua » tue cua, le cua, de 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 y nang xa hoi. hieu vien ((cac truc) OR (cau truc)) va hanh ((vi cua) or (te cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu vien ((cac truc) OR (cau truc)) va hanh ((vi cua) OR (te cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. hieu vien ((cac truc) OR (cau truc)) va hanh ((vi cua) or (te cua)) triet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu vien ((cac truc) OR (cau truc)) va hanh ((vi cua) or (te cua)) triet*.