Perhaps you should try some spelling variations:
nam trong » nam trung, cay trong
toc sach » hoc sach, doc sach, thuoc sach
xa doanh » va doanh, hoa doanh, van doanh
ky lang » ky dang, ky tang, tay lang
hieu va » lieu va, hieu qua
nam tuc » nam thuc, nam truc, nam tu
tai cua » thai cua, tai cuc, tri cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ((ky lang) or (ky nang)) xa hoi. hieu va ((nam tuc) or (nam trong)) xa doanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ky lang) OR (ky nang)) xa hoi. hieu va ((nam tuc) OR (nam trong)) xa doanh tai cua te.
• Adding a wildcard symbol may retrieve word variants: toc sach ((ky lang) or (ky nang)) xa hoi. hieu va ((nam tuc) or (nam trong)) xa doanh tai cua te*.