Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
nang hai » hang hai, nang tai, dang hai
nghe nam » nghe lam, nghiep nam, nghe nano
thuc va » thuc vat, thuc dan, thuc day
ky lang » ky dang, ky tang, tay lang
hai cua » thai cua, dai cua, hoi cua
hoa hoi » khoa hoi, hoa hoc, hoa doi
va nang » van nang, da nang, cam nang
te sac » te sach, te cac, te san
he nam » ha nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ((ky lang) OR (ky nang)) hoa hoi. hieu ((he nam) or (nghe nam)) thuc va nang hai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ((ky lang) OR (ky nang)) hoa hoi. hieu ((he nam) OR (nghe nam)) thuc va nang hai cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ((ky lang) OR (ky nang)) hoa hoi. hieu ((he nam) or (nghe nam)) thuc va nang hai cua viet".
• Adding a wildcard symbol may retrieve word variants: te sac ((ky lang) OR (ky nang)) hoa hoi. hieu ((he nam) or (nghe nam)) thuc va nang hai cua viet*.