Perhaps you should try some spelling variations:
hien bach » vien bach, thien hach, hien hanh
hieu hien » bieu hien, dieu hien, chieu chien
bach nuoc » bach tuoc, sach nuoc, bich ngoc
so sach » so sanh, co sach, hoc sach
bo sach » co sach, hoc sach
nang xa » nang x, lang xa, nang ma
va dinh » van dinh, va kinh, va tinh
vi cua » vai cua, di cua

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) OR (bo sach)) ky nang xa hoi. hieu hien bach nuoc va dinh ((vi cua) or (dai cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (bo sach)) ky nang xa hoi. hieu hien bach nuoc va dinh ((vi cua) OR (dai cua)) tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (bo sach)) ky nang xa hoi. hieu hien bach nuoc va dinh ((vi cua) or (dai cua)) tu*".