Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
ban thanh » ban hanh, ban hang
vu khanh » vu thanh, van khanh, duy khanh
thuc ban » thuoc ban, thuc dan, thu ban
hoc sach » hoc sinh, hoc cac, hoc anh
tai cua » thai cua, tai cuc, tri cua
co thuc » do thuc, co thua, mo thuc
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
cua te » cua tu
va co » vo co

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((vu khanh) or (vu kham))) or (hoc sach)) ky lang xa hoi. lieu va co thuc ban thanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((vu khanh) OR (vu kham))) OR (hoc sach)) ky lang xa hoi. lieu va co thuc ban thanh tai cua te.
• Adding a wildcard symbol may retrieve word variants: ((((vu khanh) or (vu kham))) or (hoc sach)) ky lang xa hoi. lieu va co thuc ban thanh tai cua te*.