Perhaps you should try some spelling variations:
chat thuc » thuat thuc, nhan thuc, chat thai
hieu cao » chieu cao, hieu cac, hieu ca
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
thuc va » thuc vat, thuc dan, thuc day
vai cua » dai cua, hai cua, bai cua
lai cua » dai cua, hai cua, lai chau
tu dan » tuc dan, tu ban, cu dan
dan ky » van ky
va don » va dong, va doc, va do

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu dan ky ((nang xa) OR (lang xa)) hoi. hieu cao chat thuc va don ((vai cua) or (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dan ky ((nang xa) OR (lang xa)) hoi. hieu cao chat thuc va don ((vai cua) OR (lai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu dan ky ((nang xa) OR (lang xa)) hoi. hieu cao chat thuc va don ((vai cua) or (lai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu dan ky ((nang xa) OR (lang xa)) hoi. hieu cao chat thuc va don ((vai cua) or (lai cua)) tre*.