Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
va thanh » gia thanh, ban thanh, va tinh
nang xa » nang x, lang xa, nang ma
loi cua » loai cua, hoi cua, lai cua
doi cua » dai cua, hoi cua
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ve cac » va cac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu ((ve cac) OR (vien cac)) tu va thanh ((loi cua) OR (doi cua)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang xa hoi. hieu ((ve cac) or (vien cac)) tu va thanh ((loi cua) OR (doi cua)) triet~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu ((ve cac) or (vien cac)) tu va thanh ((loi cua) OR (doi cua)) triet*.