Perhaps you should try some spelling variations:
truc van » truc va, thuc van, truc ban
van hang » van khang, van hoang, van thang
hang hai » hoang hai, hang tai, thanh hai
su triet » su viet, su tien, ve triet
so sach » so sanh, bo sach, co sach
qua cau » quan cau, qua cac, qua ca
y nang » ky nang, ly nang, v nang
co hai » co dai, co hoi, so hai
hai su » hai vu, lai su, hai so
o hoi » co hoi, o hoc, o hoa
o hai » so hai, o lai, _ hai

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 y nang ((o hoi) or (((o hai) or (co hai)))). hieu qua cau truc van hang hai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang ((o hoi) OR (((o hai) OR (co hai)))). hieu qua cau truc van hang hai su triet.
• Adding a wildcard symbol may retrieve word variants: so sach y nang ((o hoi) or (((o hai) or (co hai)))). hieu qua cau truc van hang hai su triet*.