Perhaps you should try some spelling variations:
loai nang » loai nam, luan nang, loai san
ban thanh » ban hanh, ban hang
thien van » thi van
thai tuc » thai thuc, thai thuy, thai hoc
thanh vi » hanh vi, thanh va, thanh ve
van thai » van thoai, van tai, van hai
tuc ban » thuc ban, truc ban, tu ban
cua tre » cua te, cuu tre, cua triet
bo sach » co sach, hoc sach
lo nang » ho nang, ly nang, cao nang
ca tren » cau tren, cu tren, la tren

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach ((lo nang) OR (loai nang)) xa hoi. thien van thai tuc ban thanh vi ((cua tre) or (ca tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ((lo nang) OR (loai nang)) xa hoi. thien van thai tuc ban thanh vi ((cua tre) OR (ca tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo sach ((lo nang) OR (loai nang)) xa hoi. thien van thai tuc ban thanh vi ((cua tre) or (ca tren))".
• Adding a wildcard symbol may retrieve word variants: bo sach ((lo nang) OR (loai nang)) xa hoi. thien van thai tuc ban thanh vi ((cua tre) or (ca tren))*.