Perhaps you should try some spelling variations:
cach thoi » cach thuc, cach noi
kien chao » vien cao, dien cho, khien cho
dieu kien » dieu khien, dien bien
cac khoi » cac khoan, hoc khoi, cac hop
hanh vai » hanh vi, hanh va, hanh tai
cac thoi » cac toi, cac hop, cac tro
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
sac ke » tac ke, sac ky, cac ke
tu sac » tu sach, tu cac, tu san
xu va » xu van, tu va, su va
ke va » te va

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 ke va ((((cac khoi) OR (cac thoi))) or (cach thoi)). dieu kien chao xu va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ke va ((((cac khoi) OR (cac thoi))) OR (cach thoi)). dieu kien chao xu va hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ke va ((((cac khoi) OR (cac thoi))) or (cach thoi)). dieu kien chao xu va hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ke va ((((cac khoi) OR (cac thoi))) or (cach thoi)). dieu kien chao xu va hanh vai cua tre*.