Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
mai khoi » mai khoa, tai khoa, cac khoi
bach xuc » bach tuoc, bach xuan, bach hue
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
mai hoi » dai hoi, mai doi, mai hoa
lai hoi » dai hoi, lai hoa, lai roi
xuc van » duc van, luc van, vuc van
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: tu sach tu nang ((((mai hoi) or (lai hoi))) or (mai khoi)). hieu vien bach xuc van hanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu nang ((((mai hoi) OR (lai hoi))) OR (mai khoi)). hieu vien bach xuc van hanh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: tu sach tu nang ((((mai hoi) or (lai hoi))) or (mai khoi)). hieu vien bach xuc van hanh vi cua vat*.