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 sanh » do sanh
sanh ky » hanh ky, sang ky, nganh ky
nang xa » lang xa, nang ma, mang xa
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
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 sanh ky ((nang xa) OR (nang x)) hoi. hieu hien bach nuoc ((va danh) or (va hanh)) vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ky ((nang xa) OR (nang x)) hoi. hieu hien bach nuoc ((va danh) OR (va hanh)) vi cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh ky ((nang xa) OR (nang x)) hoi. hieu hien bach nuoc ((va danh) or (va hanh)) vi cua tu*".