Perhaps you should try some spelling variations:
nang noi » nang doc
te sach » toc sach
xa hanh » xa thanh, xa khanh, va hanh
dam tuc » dam thuc, dao tuc, nam thuc
sach ky » sac ky, sach y, sach ty
nang ra » nang ma, lang ra, nang ro
dam tu » nam tu, cam tu, tam tu
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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 noi) or (nang ra)) hoi. hieu qua ((dam tuc) or (dam tu)) xa hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang noi) OR (nang ra)) hoi. hieu qua ((dam tuc) OR (dam tu)) xa hanh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang noi) or (nang ra)) hoi. hieu qua ((dam tuc) or (dam tu)) xa hanh vi cua tu*.