Perhaps you should try some spelling variations:
nhan thuc » nhan luc, dan thuc, toan thuc
dan thanh » dang thanh, danh thanh, ban thanh
thuc dan » thuc hanh, hoc dan, thuc vat
te sach » toc sach
hai cua » thai cua, dai cua, hoi cua
bai cua » ban cua, dai cua, bai ca
ve nhan » ve nha, de nhan, va nhan
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa

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 xa) or (lang xa)) hoi. hieu ve nhan thuc dan thanh ((bai cua) or (hai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang xa) OR (lang xa)) hoi. hieu ve nhan thuc dan thanh ((bai cua) OR (hai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang xa) or (lang xa)) hoi. hieu ve nhan thuc dan thanh ((bai cua) or (hai cua)) tre*.