Perhaps you should try some spelling variations:
thanh viec » thanh vien, thanh liem, thanh nien
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
nang xa » lang xa, nang ma, mang xa
va cham » va chat, va tham
soc gia » toc gia, so gia, quoc gia
hoc gia » hoc giao, hoc giai, toc gia
viec cu » viec cua, viec su, viec xu
cu tren » tu tren, dua tren

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: vu sach ky ((nang xa) OR (nang x)) hoi. lieu va cham ((soc gia) OR (hoc gia)) thanh viec cu tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky ((nang xa) or (nang x)) hoi. lieu va cham ((soc gia) OR (hoc gia)) thanh viec cu tren~".
• Adding a wildcard symbol may retrieve word variants: vu sach ky ((nang xa) or (nang x)) hoi. lieu va cham ((soc gia) OR (hoc gia)) thanh viec cu tren*.