Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
nang dai » nang dau, nang tai, lang dai
van tuan » van quan, van ban, anh tuan
tu sach » thu sach, su sach, te sach
dai hoi » dai hoc, dai hai, dai moi
cac xuc » cac nuoc, chat xuc, cac cuoc
tuan vi » quan vi, luan vi, quans vi
ca viet » va viet, co viet, hoa viet
y nang » ky nang, ly nang, v nang
vi ca » vit ca, li ca, va ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang dai hoi. hieu hien ((cac xuc) or (cam xuc)) van tuan vi ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang dai hoi. hieu hien ((cac xuc) OR (cam xuc)) van tuan vi ca viet.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang dai hoi. hieu hien ((cac xuc) or (cam xuc)) van tuan vi ca viet*.