Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hien can » hien cac, hien cau, vien can
can thuc » dan thuc, van thuc, cay thuc
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
cua viet » ca viet, hoa viet, cua vat
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty lang » tay lang, ty xang, ty hang
lang xa » lang ha, dang xay, lang van
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty lang xa hoi. hieu hien can thuc van hanh vi cua viet~.
• Adding a wildcard symbol may retrieve word variants: so sach ty lang xa hoi. hieu hien can thuc van hanh vi cua viet*.