Perhaps you should try some spelling variations:
dieu hien » dieu khien, dieu kien, bieu hien
hien chao » hien phap, vien cao, dien cho
cac khoi » cac thoi, cac khoan, cach thoi
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
xu van » tu van, vu van, su van
ky va » ke va, my va, ky la

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 va) or (ly va)) cac khoi. dieu hien chao xu van hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky va) OR (ly va)) cac khoi. dieu hien chao xu van hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky va) or (ly va)) cac khoi. dieu hien chao xu van hanh vai cua tre*.