Perhaps you should try some spelling variations:
viec bach » vien bach, viec bao, viet sach
viec ban » viec lam, viec va, viec tai
thanh va » thanh van, hanh va, thanh ha
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
cuu tre » cua tre, cau tren, cau treo
ky dang » ky danh
xuc va » duc va, tuc va, luc va
va cuu » va cau, va chu, va huu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((ky dang) or (ky nang)) xa hoi. hieu ((viec bach) OR (viec ban)) xuc va thanh va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky dang) OR (ky nang)) xa hoi. hieu ((viec bach) OR (viec ban)) xuc va thanh va cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky dang) or (ky nang)) xa hoi. hieu ((viec bach) OR (viec ban)) xuc va thanh va cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky dang) or (ky nang)) xa hoi. hieu ((viec bach) OR (viec ban)) xuc va thanh va cuu tre*.