Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
so sach » so sanh, bo sach, co sach
kv nang » ky nang, ki nang, ke nang
hieu ly » hieu ky, lieu ly, dieu ly
cuu tre » cua tre, cau tren, cau treo
v nang » va nang, vu nang, van nang
ly dat » ly dai, ly dao, ly mat
vi cuu » vi luu, vinh cuu
nuoc » quoc, duoc, ngoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ((v nang) or (kv nang)) xa hoi. hieu ly dat nuoc va thanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((v nang) OR (kv nang)) xa hoi. hieu ly dat nuoc va thanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: so sach ((v nang) or (kv nang)) xa hoi. hieu ly dat nuoc va thanh vi cuu tre*.