Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
toc sach » hoc sach, doc sach, thuoc sach
va doanh » van doanh, vay doanh, va danh
tai cua » thai cua, tai cuc, tri cua
truc va » thuc va, thuc vat, trung va
co truc » co thuc, cau truc, co trach
lang xa » lang ha, dang xay
cua su » qua su
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: ((te sach) or (toc sach)) ky ((lang xa) OR (lang van)) hoi. lieu va co truc va doanh tai cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky ((lang xa) OR (lang van)) hoi. lieu va co truc va doanh tai cua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ky ((lang xa) OR (lang van)) hoi. lieu va co truc va doanh tai cua su".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ky ((lang xa) OR (lang van)) hoi. lieu va co truc va doanh tai cua su*.