Perhaps you should try some spelling variations:
quans vi » quan li, quan va, quan ve
su sach » so sach, vu sach
quan vi » quan li, quan tri, quan doi
cau luc » cau truc, cau phuc
cuu tre » cua tre, cau tren, cau treo
cau tuc » cau truc, cau tu, cau phuc
y nang » ky nang, ly nang, v nang
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: su sach y nang x hoi. lieu va ((cau tuc) OR (cau luc)) van ((quan vi) or (quans vi)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang x hoi. lieu va ((cau tuc) OR (cau luc)) van ((quan vi) OR (quans vi)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang x hoi. lieu va ((cau tuc) OR (cau luc)) van ((quan vi) or (quans vi)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sach y nang x hoi. lieu va ((cau tuc) OR (cau luc)) van ((quan vi) or (quans vi)) cuu tre*.