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