Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
tu tieng » luc tieng, tu tuong, tu trong
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu he » hieu ve, hiem he, hieu le
thuc va » thuc vat, thuc day
he nam » ha nam, nghe nam
x hoi » xa hoi, o hoi, x ho
ca tu » ca tru, cau tu, ca thu

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 nang x hoi. hieu he nam ((thuc va) OR (thuc dan)) dan ca tu tieng~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang x hoi. hieu he nam ((thuc va) OR (thuc dan)) dan ca tu tieng".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. hieu he nam ((thuc va) OR (thuc dan)) dan ca tu tieng*.