Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
toc sach » hoc sach, doc sach, thuoc sach
cua tuc » cua tu, cua thuoc, luat tuc
van anh » van thanh, tuan anh, van minh
xuc van » duc van, luc van, vuc van
vien da » vien dai, hien dai
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
cua duc » cua nuoc, cua quoc
ma hoi » mai hoi, xa hoi, ma hoa

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) OR (toc sach)) ty nang ma hoi. hieu vien da xuc van anh d ((cua tuc) or (cua duc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ty nang ma hoi. hieu vien da xuc van anh d ((cua tuc) OR (cua duc))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ty nang ma hoi. hieu vien da xuc van anh d ((cua tuc) or (cua duc))*".