Perhaps you should try some spelling variations:
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
truc va » thuc va, thuc vat, trung va
han tri » han tai, van tri, thanh tri
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
va cam » va cham, va cac, va cao
loc va » hoc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ve cac ky ((nang xa) or (nang x)) hoi. hieu va cam ((truc va) or (loc va)) han tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ve cac ky ((nang xa) OR (nang x)) hoi. hieu va cam ((truc va) OR (loc va)) han tri cua tre.
• Adding a wildcard symbol may retrieve word variants: ve cac ky ((nang xa) or (nang x)) hoi. hieu va cam ((truc va) or (loc va)) han tri cua tre*.