Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
thanh ve » hanh ve, thanh va, thanh vien
toc sach » hoc sach, doc sach, thuoc sach
duc gia » quoc gia
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
ve cac » va cac, vien cac
ve cau » ke cau, va cau, le cau
ve cam » ve cham, va cam, ve cai

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)) ty lang xa hoi. hieu ((ve cam) or (ve cac)) duc gia thanh ve cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ty lang xa hoi. hieu ((ve cam) OR (ve cac)) duc gia thanh ve cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ty lang xa hoi. hieu ((ve cam) or (ve cac)) duc gia thanh ve cau treo".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ty lang xa hoi. hieu ((ve cam) or (ve cac)) duc gia thanh ve cau treo*.