Perhaps you should try some spelling variations:
nuoc san » nuoc luan, nguoi san, nuoc quan
van hanh » van thanh, ban hanh, van anh
chuc van » chu van, chuc va, thuc van
cac chuc » cac chu, cac chung, cach thuc
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
hanh de » hanh ve, hanh kem
cuu tre » cua tre, cau tren, cau treo
ve cac » va cac, vien cac
san ky » sang ky, van ky, dan ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc san ky ((nang xa) or (nang x)) hoi. hieu ve cac chuc van hanh de ((cua te) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc san ky ((nang xa) OR (nang x)) hoi. hieu ve cac chuc van hanh de ((cua te) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: nuoc san ky ((nang xa) or (nang x)) hoi. hieu ve cac chuc van hanh de ((cua te) or (cuu tre))*.