Perhaps you should try some spelling variations:
dinh vang » dinh van, dinh lang, dinh rang
cuu tre » cau tren, cau treo
hieu va » lieu va, hieu qua
cua tre » cua te, cua triet, dua tren
nang xa » nang x, lang xa, nang ma
truc va » thuc va, thuc vat, trung va
tu cao » cu cao, tu cac, vu cao
tuc va » thuc va, tuc xa, duc va
va cao » va cac, va co, va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cao ky nang xa hoi. hieu va cao ((tuc va) or (truc va)) dinh vang ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cao ky nang xa hoi. hieu va cao ((tuc va) OR (truc va)) dinh vang ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cao ky nang xa hoi. hieu va cao ((tuc va) or (truc va)) dinh vang ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu cao ky nang xa hoi. hieu va cao ((tuc va) or (truc va)) dinh vang ((cua tre) OR (cuu tre))*.