Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vai » thanh hai, thanh van, thanh tai
vien cac » vien bach, vien dai, gian cac
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
vien da » vien dai, hien dai
xuc ban » duc ban, cuc ban, quoc ban
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
su cac » tu cac, su cao, su can

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cac ky lang xa hoi. hieu ((vien cac) or (vien da)) xuc ban thanh vai ((cuu tre) OR (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac ky lang xa hoi. hieu ((vien cac) OR (vien da)) xuc ban thanh vai ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac ky lang xa hoi. hieu ((vien cac) or (vien da)) xuc ban thanh vai ((cuu tre) OR (cua tre))".
• Adding a wildcard symbol may retrieve word variants: su cac ky lang xa hoi. hieu ((vien cac) or (vien da)) xuc ban thanh vai ((cuu tre) OR (cua tre))*.