Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
bach tuoc » sach duoc
sach nuoc » sach duoc, cac nuoc, dich nuoc
so sach » so sanh, bo sach, co sach
va hanh » van hanh, va thanh, ban hanh
nang xa » nang x, lang xa, nang ma
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, dia danh
di cua » dai cua, doi cua, de cua
cua su » qua su

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

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