Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
thu sach » tu sach, thuat sach, thuoc sach
sach tri » sach tai, sach tren, sach truc
tri nang » thi nang, tra nang, tri bang
vien cap » vien cac, vien cao, vien can
cap nuoc » dat nuoc
mai hoi » mai khoi, dai hoi, mai doi
lai hoi » dai hoi, lai hoa, lai roi
va hanh » van hanh, va thanh, va danh
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach tri nang ((mai hoi) or (lai hoi)). hieu vien cap nuoc va hanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach tri nang ((mai hoi) OR (lai hoi)). hieu vien cap nuoc va hanh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: thu sach tri nang ((mai hoi) or (lai hoi)). hieu vien cap nuoc va hanh vi cua vat*.