Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cao suc » cao su, cao duc
doi cua » hoi cua
sac ky » cac ky, sai ky
va cao » va cac, va co, va dao
suc ca » suc cap, suc co, suc ma
ca dan » cac dan, ca dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach y) or (sac ky)) nang xa hoi. hieu va cao suc ca dan ((doi cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach y) OR (sac ky)) nang xa hoi. hieu va cao suc ca dan ((doi cua) OR (dai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: thu ((sach y) or (sac ky)) nang xa hoi. hieu va cao suc ca dan ((doi cua) or (dai cua)) tre*.