Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hien hanh » dieu hanh
hanh nuoc » hanh duoc, hanh thuoc, khanh quoc
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, va hanh
vi cua » vai cua
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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 ky nang x hoi. hieu hien hanh nuoc va danh ((vi cua) or (di cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang x hoi. hieu hien hanh nuoc va danh ((vi cua) OR (di cua)) tu*.