Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
thanh te » thanh ve, thanh de, thanh le
va triet » va thiet, va trien, ve triet
ty nang » ty xang, ty hang, ly nang
tac xa » tac da
te 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: thuoc sach ((ty nang) or (ky nang)) x ho. hieu vien cac ((tac xa) OR (tuc xa)) thanh te va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ((ty nang) OR (ky nang)) x ho. hieu vien cac ((tac xa) OR (tuc xa)) thanh te va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ((ty nang) or (ky nang)) x ho. hieu vien cac ((tac xa) OR (tuc xa)) thanh te va triet".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((ty nang) or (ky nang)) x ho. hieu vien cac ((tac xa) OR (tuc xa)) thanh te va triet*.