Perhaps you should try some spelling variations:
thieu nien » thien nhien
hieu vien » hieu hien, hieu viec, hieu tieng
nang xa » nang x, lang xa, nang ma
cac xuc » cam xuc, cac nuoc, chat xuc
va danh » va dan, va hanh, dia danh
va dinh » van dinh, va kinh, va tinh
co cua » con cua, ca cua, cong cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang xa hoi. ((hieu vien) or (thieu nien)) cac xuc ((va danh) OR (va dinh)) co cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang xa hoi. ((hieu vien) OR (thieu nien)) cac xuc ((va danh) OR (va dinh)) co cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang xa hoi. ((hieu vien) or (thieu nien)) cac xuc ((va danh) OR (va dinh)) co cua tu".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang xa hoi. ((hieu vien) or (thieu nien)) cac xuc ((va danh) OR (va dinh)) co cua tu*.