Perhaps you should try some spelling variations:
hanh vinh » thanh vinh, khanh vinh, hanh tinh
vien cac » vien bach, vien dai, vien da
vinh cuu » dinh cuu, sinh cua, dinh cu
van hanh » van thanh, ban hanh, van anh
cuu tre » cua tre, cau tren, cau treo
xuc van » duc van, luc van, vuc van
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ve cac » va cac
o hoi » co hoi, o hoc, o hai
x hoi » xa hoi, x ho, 5 hoi

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 nang ((x hoi) OR (o hoi)). hieu ((ve cac) or (vien cac)) xuc van hanh vinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((x hoi) OR (o hoi)). hieu ((ve cac) OR (vien cac)) xuc van hanh vinh cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ((x hoi) OR (o hoi)). hieu ((ve cac) or (vien cac)) xuc van hanh vinh cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((x hoi) OR (o hoi)). hieu ((ve cac) or (vien cac)) xuc van hanh vinh cuu tre*.