Perhaps you should try some spelling variations:
dan hanh » dang hanh, dan khanh, dan thanh
cuu hoc » cua hoc, cuu thuoc, cuu duoc
hanh te » hanh tu, hanh ve, hanh de
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
te cua » tue cua, le cua, de cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang x hoi. lieu va ((cuu hoc) OR (cuu khoa)) dan hanh te cua te~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang x hoi. lieu va ((cuu hoc) OR (cuu khoa)) dan hanh te cua te*.