Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec cac » vien cac, viec cua, viec lam
van danh » van doanh, van anh, van hanh
thu sach » thuat sach, thuoc sach, thu hoach
ban hanh » ban hang
vai cuu » vai cua
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
cac lo » cac lop, cac co, cac bo

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) OR (thu sach)) ky nang xa hoi. hieu viec cac lo ((van danh) or (ban hanh)) vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang xa hoi. hieu viec cac lo ((van danh) OR (ban hanh)) vai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ky nang xa hoi. hieu viec cac lo ((van danh) or (ban hanh)) vai cuu tre*".