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
dang xay » dang van, van xay
hai cua » thai cua, dai cua, hoi cua
vai cua » dai cua, lai cua, bai cua
va danh » va dinh, va dan, va hanh
co sach » bo sach, cuon sach, hoc sach
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
so sanh » do sanh

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 (so sanh)) ky dang xay hoi. hieu hien hanh nuoc va danh ((vai cua) OR (hai cua)) cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((co sach) OR (so sanh)) ky dang xay hoi. hieu hien hanh nuoc va danh ((vai cua) OR (hai cua)) cu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((co sach) or (so sanh)) ky dang xay hoi. hieu hien hanh nuoc va danh ((vai cua) OR (hai cua)) cu*".