Perhaps you should try some spelling variations:
nam chua » nam cua, nem chua, kham chua
chua may » nha may, hoa may
hieu ha » hieu hoa, hieu va, hieu ca
danh vi » hanh vi, danh di, danh va
dinh vi » dinh ve, dinh viet, dinh tri
cuu tre » cua tre, cau tren, cau treo
sac ky » sai ky
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sac ky) or (cac ky)) nang o hoi. hieu ha nam chua may ((danh vi) or (dinh vi)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (cac ky)) nang o hoi. hieu ha nam chua may ((danh vi) OR (dinh vi)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (cac ky)) nang o hoi. hieu ha nam chua may ((danh vi) or (dinh vi)) cuu tre*.