Perhaps you should try some spelling variations:
van chinh » va chinh, lan chinh, van thinh
dua tren » dung tren
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
duc van » duc va, duc tan, duc manh
cua tre » cua te, cua triet, cua thep
cuu tre » cau tren, cau treo
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

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 xa hoi. hieu ve pham duc van chinh tri ((((cua tre) or (dua tren))) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu ve pham duc van chinh tri ((((cua tre) OR (dua tren))) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu ve pham duc van chinh tri ((((cua tre) or (dua tren))) or (cuu tre))*.