Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
va danh » va dinh, va dan, va hanh
danh di » danh du, xanh di, danh dien
vu dai » vi dai, va dai, vu hai
dai ky » dan ky, dai ly, sai ky
ve cac » va cac
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu dai ky nang x hoi. hieu ((ve cac) or (vien cac)) nuoc va danh di ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu dai ky nang x hoi. hieu ((ve cac) OR (vien cac)) nuoc va danh di ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu dai ky nang x hoi. hieu ((ve cac) or (vien cac)) nuoc va danh di ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: vu dai ky nang x hoi. hieu ((ve cac) or (vien cac)) nuoc va danh di ((cua te) OR (cua tu))*.