Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuoc sinh
thuat sach » thuat lanh, thuat san
vien cua » viec cua, dien cua, tien cua
cao luc » bao luc, cao duc, cao suc
nang xa » lang xa, nang ma, mang xa
va nhan » van nhan, ca nhan, va phan
hieu ve » hieu va, hieu van
luc va » duc va, tuc va, loc va
cua te » cua tu
ve cao » va cao, ve bao, ve cac

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: ((thuoc sach) OR (thuat sach)) ky ((nang xa) OR (nang x)) hoi. hieu ve cao luc va nhan vien cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) or (thuat sach)) ky ((nang xa) OR (nang x)) hoi. hieu ve cao luc va nhan vien cua te~".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (thuat sach)) ky ((nang xa) OR (nang x)) hoi. hieu ve cao luc va nhan vien cua te*.