Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
lang van » dang van, tang van, hoang van
van hanh » van thanh, ban hanh, van ban
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay
van anh » van thanh, tuan anh, van minh
so sach » so sanh, bo sach, co sach
va cau » van cau, va cac, va dau
di cau » da cau, diem cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty ((lang xa) OR (lang van)) hoi. lieu va cau truc ((van hanh) or (van anh)) di cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty ((lang xa) OR (lang van)) hoi. lieu va cau truc ((van hanh) OR (van anh)) di cau treo*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty ((lang xa) OR (lang van)) hoi. lieu va cau truc ((van hanh) or (van anh)) di cau treo*".