Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
bach nuoc » sach nuoc, bich ngoc, cac nuoc
bach tuoc » sach duoc, sach nuoc
so sach » so sanh, bo sach, co sach
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
va danh » va dinh, va hanh, dia danh
va dan » ca dan, va dao, va dau
vi cua » vai cua, di cua
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: so sach ty nang xa hoi. hieu hien ((bach nuoc) or (bach tuoc)) ((va danh) OR (va dan)) vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang xa hoi. hieu hien ((bach nuoc) OR (bach tuoc)) ((va danh) OR (va dan)) vi cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang xa hoi. hieu hien ((bach nuoc) or (bach tuoc)) ((va danh) OR (va dan)) vi cua tu*".