Perhaps you should try some spelling variations:
thanh vien » nhan vien, thanh van
thien van » thi van
van cham » van chat, van tham, va cham
vien cua » viec cua, dien cua, tien cua
cua tren » dua tren, ca tren, cua tre
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
nang ma » tang ma, sang ma, nang cao
soc gia » toc gia, hoc gia, so gia

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: so sach ty ((lang xa) OR (nang ma)) hoi. thien van cham soc gia thanh vien cua tren~.
• Adding a wildcard symbol may retrieve word variants: so sach ty ((lang xa) or (nang ma)) hoi. thien van cham soc gia thanh vien cua tren*.