Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
sach ty » sach y, sach tu, sach thu
xuc van » duc van, luc van, vuc van
ve cac » va cac, vien cac
va cao » va cac, va co, va dao
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 ty ((nang ma) or (mang may)) hoi. hieu ((ve cac) or (va cao)) xuc van thanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((nang ma) OR (mang may)) hoi. hieu ((ve cac) OR (va cao)) xuc van thanh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((nang ma) or (mang may)) hoi. hieu ((ve cac) or (va cao)) xuc van thanh vi cua vat*.