Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
qua cac » cua cac
cac tuc » cac toc, cac tu, cac tac
cuu tre » cua tre, cau tren, cau treo
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
xa don » xa dong, la don, ba don
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 san ky ((nang xa) OR (nang ma)) hoi. hieu qua cac tuc xa don vi cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky ((nang xa) OR (nang ma)) hoi. hieu qua cac tuc xa don vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu san ky ((nang xa) OR (nang ma)) hoi. hieu qua cac tuc xa don vi cuu tre*.