Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
vien cua » viec cua, dien cua, tien cua
va nhan » van nhan, ca nhan, va nha
nang xa » nang x, lang xa, nang ma
va phan » van phan, va phat, va phap
va cao » va cac, va co, va dao
y nang » ky nang, ly nang, v nang
cua te » cua tu
ve co » vo co, va co, de co

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