Perhaps you should try some spelling variations:
tahoa lang » tho lang, thon lang
nam thuc » nam thuoc, am thuc, nam thu
hoa lang » hoa dan, hoa van
va triet » va thiet, va trien, ve triet
hanh hai » thanh hai, nhanh hai, hang hai
te sach » toc sach
va hanh » van hanh, va thanh, va danh
su viet » so viet
thuc va » thuc vat, thuc dan, thuc day
hieu he » hieu ve, hiem he, hieu le
ha hoi » hoa hoi, ha noi, xa hoi
he nam » ha nam, nghe 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 sach ((hoa lang) or (tahoa lang)) ha hoi. hieu he nam thuc va hanh hai ((va triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((hoa lang) OR (tahoa lang)) ha hoi. hieu he nam thuc va hanh hai ((va triet) OR (su viet)).
• Adding a wildcard symbol may retrieve word variants: te sach ((hoa lang) or (tahoa lang)) ha hoi. hieu he nam thuc va hanh hai ((va triet) or (su viet))*.