Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
so sanh » do sanh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cac thu » cach thuc, cac thoi
va hang » van hang, va nang, va lang
hang da » hang dau, hang dam, hoang da
ve cac » va cac, vien cac
thu va » thuc va, thue va, tu va
da cau » dat cau, va cau

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 (so sanh)) ky lang xa hoi. hieu ve cac thu va hang da cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (so sanh)) ky lang xa hoi. hieu ve cac thu va hang da cau tren.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (so sanh)) ky lang xa hoi. hieu ve cac thu va hang da cau tren*.