Perhaps you should try some spelling variations:
nang thai » nang tai, dang thai, lang thai
thuc dan » hoc dan, thuc vat
thai cua » than cua, tai cuc, tri cua
cua viet » ca viet, hoa viet, cua vat
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
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 ky lang ha hoi. hieu he nam ((thuc dan) or (thuc hanh)) nang thai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang ha hoi. hieu he nam ((thuc dan) OR (thuc hanh)) nang thai cua viet.
• Adding a wildcard symbol may retrieve word variants: te sach ky lang ha hoi. hieu he nam ((thuc dan) or (thuc hanh)) nang thai cua viet*.