Perhaps you should try some spelling variations:
dieu hien » dieu khien, dieu kien, bieu hien
hanh nuoc » hanh duoc, hanh thuoc, khanh quoc
hien hanh » dieu hanh
dinh vi » dinh ve, dinh viet, dinh tri
danh vi » hanh vi, danh di, danh va
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
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 sach ky ((nang xa) OR (nang ma)) hoi. dieu hien hanh nuoc va ((danh vi) or (dinh vi)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky ((nang xa) OR (nang ma)) hoi. dieu hien hanh nuoc va ((danh vi) OR (dinh vi)) cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky ((nang xa) OR (nang ma)) hoi. dieu hien hanh nuoc va ((danh vi) or (dinh vi)) cua tu*".