Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thien van » thi van
anh giau » anh giao, canh giac, anh giang
cau tren » cu tren, dau tren, ca tren
van anh » van thanh, tuan anh, van minh
cuu tre » cua tre, cau treo
cac vo » cac vi, cac bo, cac ho
y nang » ky nang, ly nang, v nang
cac co » cac cong
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: thuoc sach y nang x hoi. thien van ((cac vo) OR (cac co)) van anh giau ((cuu tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y nang x hoi. thien van ((cac vo) OR (cac co)) van anh giau ((cuu tre) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y nang x hoi. thien van ((cac vo) OR (cac co)) van anh giau ((cuu tre) or (cau tren))".
• Adding a wildcard symbol may retrieve word variants: thuoc sach y nang x hoi. thien van ((cac vo) OR (cac co)) van anh giau ((cuu tre) or (cau tren))*.