Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
bieu hien » dieu hien, dieu khien, bien phien
hien cac » thien cac, vien cac, hieu cac
nang xa » lang xa, nang ma, mang xa
cac bao » cach bao, cac bai, cac ban
va dinh » van dinh, va kinh, va tinh
dinh va » dinh van, dinh ve, tinh va
cua tre » cua te, cuu tre, dua tren
san ky » sang ky, van ky, dan ky
bao va » bao ve, tao va, ban va
tu san » thu san, tu ban, tu can

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky ((nang xa) or (nang x)) hoi. bieu hien cac bao va dinh va ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky ((nang xa) OR (nang x)) hoi. bieu hien cac bao va dinh va ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu san ky ((nang xa) or (nang x)) hoi. bieu hien cac bao va dinh va ((cua tre) or (cua triet))*.