Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
dinh hai » dinh thai, tinh hai, dinh ha
te sach » toc sach
nang xa » nang x, lang xa, nang ma
dai lao » dai thao, dai luan, chai lao
dai lan » dai luan, dai han, dam lan
va dinh » van dinh, va kinh, va tinh
hai cua » thai cua, dai cua, hoi cua
y nang » ky nang, ly nang, v nang
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: te sach y nang xa hoi. hieu vien ((dai lao) OR (dai lan)) va dinh hai cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang xa hoi. hieu vien ((dai lao) OR (dai lan)) va dinh hai cua tu".
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. hieu vien ((dai lao) OR (dai lan)) va dinh hai cua tu*.