Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
vien cua » viec cua, dien cua, tien cua
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
su van » tu van, vu van
ve cac » va cac, vien cac
ve cao » va cao, ve bao, ve co
cua te » cua tu
su va » tu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang xa hoi. hieu ((ve cao) or (ve cac)) ((su va) OR (su van)) nhan vien cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. hieu ((ve cao) OR (ve cac)) ((su va) OR (su van)) nhan vien cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang xa hoi. hieu ((ve cao) or (ve cac)) ((su va) OR (su van)) nhan vien cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. hieu ((ve cao) or (ve cac)) ((su va) OR (su van)) nhan vien cua te*.