Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, vu cham
cua tre » cuu tre, cua triet, dua tren
y nang » ky nang, ly nang, v nang
ve cam » ve cac, va cam, ve cai
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: tu sach y nang x hoi. hieu ((ve cam) or (ve cham)) duc va thanh dai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu ((ve cam) OR (ve cham)) duc va thanh dai ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ((ve cam) or (ve cham)) duc va thanh dai ((cua tre) or (cua te))*.