Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, le thanh
dua tren » dung tren
te sach » toc sach
va tinh » may tinh
y nang » ky nang, ly nang, v nang
hieu v » hieu va, hieu ve, hieu 2
v pham » vi pham, d pham
cua te » cua tu
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 v pham duc ((va thanh) OR (va tinh)) dai ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu v pham duc ((va thanh) OR (va tinh)) dai ((dua tren) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang x hoi. hieu v pham duc ((va thanh) OR (va tinh)) dai ((dua tren) or (cua te))*".