Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
cau tren » cu tren, dau tren, ca tren
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
dang xay » dang van, van xay
vai cau » va cau, van cau, vai cac
cam tuc » cam xuc, cam tu, nam thuc
van cam » van nam, van lam, van cau
thi van » thi lan, thi hanh, thi nang
so sanh » do sanh
lang xa » lang ha, lang van
tuc va » thuc va, truc va, tuc xa

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) OR (dang xay)) hoi. thi van cam tuc va thanh vai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sanh) OR (thu sach)) ky ((lang xa) OR (dang xay)) hoi. thi van cam tuc va thanh vai cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sanh) or (thu sach)) ky ((lang xa) OR (dang xay)) hoi. thi van cam tuc va thanh vai cau tren".
• Adding a wildcard symbol may retrieve word variants: ((so sanh) or (thu sach)) ky ((lang xa) OR (dang xay)) hoi. thi van cam tuc va thanh vai cau tren*.