Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thuc van » thuc vat, thuc dan, thuc va
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
xuc ban » duc ban, cuc ban, quoc ban
cuu tre » cua tre, cau tren, cau treo
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky ((nang xa) OR (lang xa)) hoi. hieu van nam ((thuc van) or (xuc ban)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky ((nang xa) OR (lang xa)) hoi. hieu van nam ((thuc van) OR (xuc ban)) hanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky ((nang xa) OR (lang xa)) hoi. hieu van nam ((thuc van) or (xuc ban)) hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sai ky ((nang xa) OR (lang xa)) hoi. hieu van nam ((thuc van) or (xuc ban)) hanh vi cuu tre*.