Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
vi cua » vai cua, di cua
tu can » tu ban, tu cac, thu canh
tuc va » truc va, tuc xa, duc va
can ky » van ky, dan ky, ban ky
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu can ky ((nang xa) or (lang xa)) hoi. hieu va cam ((tuc va) or (thuc va)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu can ky ((nang xa) OR (lang xa)) hoi. hieu va cam ((tuc va) OR (thuc va)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu can ky ((nang xa) or (lang xa)) hoi. hieu va cam ((tuc va) or (thuc va)) hanh vi cua tre*.