Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
van thanh » ban thanh, van tuan
cuu nong » cuu cong, cuu tong, cuu long
cuu nang » chuc nang, cam nang, cuu van
hieu va » lieu va, hieu qua
hai cua » thai cua, dai cua, hoi cua
luc van » luoc van, luu van, duc van
cau luc » cau truc, cau phuc
tu sach » thu sach, su sach, te sach
uu nang » vu nang, dun nang, sua nang
va cau » van cau, va cac, va dau
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: tu sach ((uu nang) or (((cuu nong) OR (cuu nang)))) xa hoi. hieu va cau luc van thanh hai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((uu nang) OR (((cuu nong) OR (cuu nang)))) xa hoi. hieu va cau luc van thanh hai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((uu nang) or (((cuu nong) OR (cuu nang)))) xa hoi. hieu va cau luc van thanh hai cua tu".
• Adding a wildcard symbol may retrieve word variants: tu sach ((uu nang) or (((cuu nong) OR (cuu nang)))) xa hoi. hieu va cau luc van thanh hai cua tu*.