Perhaps you should try some spelling variations:
thuoc ma » hoc ma, duoc ma
thanh vi » hanh vi, thanh va, thanh ve
thuoc va » thuc va, thuong va, thuoc tai
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach kem
vi cua » vai cua, di cua
va nam » van nam, ha nam, va nay
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ky) OR (sach ty)) nang xa hoi. hieu va nam ((thuoc va) OR (thuoc ma)) thanh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ky) OR (sach ty)) nang xa hoi. hieu va nam ((thuoc va) or (thuoc ma)) thanh vi cua te~".
• Adding a wildcard symbol may retrieve word variants: vu ((sach ky) OR (sach ty)) nang xa hoi. hieu va nam ((thuoc va) or (thuoc ma)) thanh vi cua te*.