Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
nam trung » nam trong, tai trung, ba trung
toc sach » hoc sach, doc sach, thuoc sach
xa thanh » va thanh, ha thanh, ta thanh
tai cua » thai cua, tai cuc, tri cua
nam tuc » nam thuc, nam truc, nam tu
hieu va » lieu va, hieu qua
ky dang » ky nang, ky danh
ky lang » ky nang, ky tang, tay lang
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 dang)) xa hoi. hieu va ((nam tuc) or (nam trung)) xa thanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ky lang) OR (ky dang)) xa hoi. hieu va ((nam tuc) OR (nam trung)) xa thanh tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((ky lang) OR (ky dang)) xa hoi. hieu va ((nam tuc) or (nam trung)) xa thanh tai cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ((ky lang) OR (ky dang)) xa hoi. hieu va ((nam tuc) or (nam trung)) xa thanh tai cua te*.