Perhaps you should try some spelling variations:
thien van » thi van
ban thanh » ban hanh, ban hang
thanh vai » thanh hai, thanh van, thanh tai
thu sach » tu sach, thuat sach, thuoc sach
cau tren » cu tren, dau tren, ca tren
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
tuc ban » thuc ban, truc ban, tu ban
vai cau » va cau, van cau, vai cac

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) or (thu sach)) ky nang xa hoi. thien van cam tuc ban thanh vai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (thu sach)) ky nang xa hoi. thien van cam tuc ban thanh vai cau tren.
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (thu sach)) ky nang xa hoi. thien van cam tuc ban thanh vai cau tren*.