Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
bach nhu » sach nha, bach hue, bac nha
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
bach du » bach dieu, bach hue, bach qua
va hanh » van hanh, va thanh, va danh
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: tu sach ky ((nang xa) OR (lang xa)) hoi. hieu hien ((bach du) or (bach nhu)) va hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xa) OR (lang xa)) hoi. hieu hien ((bach du) OR (bach nhu)) va hanh vi cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((nang xa) OR (lang xa)) hoi. hieu hien ((bach du) or (bach nhu)) va hanh vi cua tu".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xa) OR (lang xa)) hoi. hieu hien ((bach du) or (bach nhu)) va hanh vi cua tu*.