Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
thanh vai » thanh hai, thanh tai, thanh oai
thanh van » thanh san, thanh toan, thanh phan
viec cac » vien cac, viec cua, viec va
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cac bac » cac bai, cac ban, cac cach
bac van » bach van, cac van, ban van

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky lang xa hoi. nhieu viec cac bac van ((thanh vai) or (thanh van)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky lang xa hoi. nhieu viec cac bac van ((thanh vai) OR (thanh van)) va triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky lang xa hoi. nhieu viec cac bac van ((thanh vai) or (thanh van)) va triet*.