Perhaps you should try some spelling variations:
sach luan » sach luyen, sach han, san luan
hieu vien » hieu hien, hieu viec, thieu nien
bach luan » bach xuan, hoach luan, binh luan
va dinh » van dinh, va kinh, vu dinh
vai cua » dai cua, hai cua, lai cua
va tinh » may tinh
te sach » toc sach
y nang » ky nang, ly nang, v nang
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang x hoi. hieu vien ((bach luan) or (sach luan)) ((va dinh) OR (va tinh)) vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu vien ((bach luan) OR (sach luan)) ((va dinh) OR (va tinh)) vai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang x hoi. hieu vien ((bach luan) or (sach luan)) ((va dinh) OR (va tinh)) vai cua tu".
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu vien ((bach luan) or (sach luan)) ((va dinh) OR (va tinh)) vai cua tu*.