Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hien bach » vien bach, thien hach, hien hanh
bach nuoc » bach tuoc, sach nuoc, bich ngoc
co sach » bo sach, cuon sach, hoc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
cua tu » cua tuc, cua cu, cua te

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach ky nang xa hoi. hieu hien bach nuoc va dan vi ((cua tu) or (((cua su) OR (qua su))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach ky nang xa hoi. hieu hien bach nuoc va dan vi ((cua tu) OR (((cua su) OR (qua su))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach ky nang xa hoi. hieu hien bach nuoc va dan vi ((cua tu) or (((cua su) OR (qua su))))*".