Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va dinh » van dinh, va kinh, va tinh
vai cua » hai cua, lai cua, bai cua
cac lo » cac lop, cac co, cac bo

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 ky nang xa hoi. hieu vien cac lo ((va dinh) or (may tinh)) ((vai cua) OR (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu vien cac lo ((va dinh) OR (may tinh)) ((vai cua) OR (dai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu vien cac lo ((va dinh) or (may tinh)) ((vai cua) OR (dai cua)) te".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu vien cac lo ((va dinh) or (may tinh)) ((vai cua) OR (dai cua)) te*.