Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
doanh vai » doanh tai, doanh van, doanh giai
cau tren » cu tren, dau tren, ca tren
doanh va » doan va, doanh tai, doanh cua
viec cac » vien cac, viec cua, viec lam
nang xa » nang x, lang xa, nang ma
tu sach » thu sach, su sach, te sach
cac vo » cac co, cac vi, cac bo
tu sac » tu cac, tu san, tu bac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu sach)) ky nang xa hoi. hieu viec cac vo van ((doanh vai) OR (doanh va)) cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu sach)) ky nang xa hoi. hieu viec cac vo van ((doanh vai) OR (doanh va)) cau tren~".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu sach)) ky nang xa hoi. hieu viec cac vo van ((doanh vai) OR (doanh va)) cau tren*.