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
van hanh » van thanh, ban hanh, van anh
bo sach » co sach, hoc sach
ky lang » ky dang, ky tang, tay lang
va hanh » va thanh, va danh, ban hanh
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: bo sach ((ky lang) OR (ky nang)) xa hoi. hieu hien bach nuoc ((va hanh) or (van hanh)) vi cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ((ky lang) OR (ky nang)) xa hoi. hieu hien bach nuoc ((va hanh) OR (van hanh)) vi cua su*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo sach ((ky lang) OR (ky nang)) xa hoi. hieu hien bach nuoc ((va hanh) or (van hanh)) vi cua su*".