Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
vu sach » vu bach, su sach, vu khach
sach tu » sach thu, cach tu, sach ty
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
va pham » van pham, va phat, va phap
duc ban » duc tan, duc van, dua ban
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach tu ((nang xa) OR (nang ma)) hoi. hieu va pham duc ban thanh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach tu ((nang xa) OR (nang ma)) hoi. hieu va pham duc ban thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach tu ((nang xa) OR (nang ma)) hoi. hieu va pham duc ban thanh vi cua te*.