Perhaps you should try some spelling variations:
thien van » thi van
cau tren » cu tren, dau tren, ca tren
va thanh » gia thanh, ban thanh, le thanh
thu sach » tu sach, thuat sach, thuoc sach
vai cau » va cau, van cau, vai cac
va tinh » may tinh
so sanh » do sanh
cam tuc » cam xuc, cam tu, nam thuc
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
van cam » van nam, van lam, van 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 sanh) or (thu sach)) ky lang xa hoi. thien van cam tuc ((va thanh) OR (va tinh)) vai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sanh) OR (thu sach)) ky lang xa hoi. thien van cam tuc ((va thanh) OR (va tinh)) vai cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sanh) or (thu sach)) ky lang xa hoi. thien van cam tuc ((va thanh) OR (va tinh)) vai cau tren".
• Adding a wildcard symbol may retrieve word variants: ((so sanh) or (thu sach)) ky lang xa hoi. thien van cam tuc ((va thanh) OR (va tinh)) vai cau tren*.