Perhaps you should try some spelling variations:
dang hai » dang khai, hang hai, dung hai
lang hoa » hang hoa, lang ha, nang hoa
nam thuc » nam thuoc, am thuc, nam thu
cua viet » ca viet, cua vat, cua dieu
nang hai » hang hai, nang tai, bang hai
thuc va » thuc vat, thuc dan, thuc day
ky lang » ky nang, ky dang, ky tang
hoa hoi » khoa hoi, hoa hoc, hoa doi
hieu ve » hieu va, hieu van
te sai » te tai, te bai, te lai
sai ky » sac ky
ve nam » he nam, va nam, le 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 sai ky lang hoa hoi. hieu ve nam thuc va ((nang hai) OR (dang hai)) ((cua viet) or (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky lang hoa hoi. hieu ve nam thuc va ((nang hai) OR (dang hai)) ((cua viet) OR (hoa viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky lang hoa hoi. hieu ve nam thuc va ((nang hai) OR (dang hai)) ((cua viet) or (hoa viet))".
• Adding a wildcard symbol may retrieve word variants: te sai ky lang hoa hoi. hieu ve nam thuc va ((nang hai) OR (dang hai)) ((cua viet) or (hoa viet))*.