Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
tham duc » pham duc, tham du, than duc
van tham » van thanh, van tuan, van chat
sach ky » sac ky, sach y, sach kem
luu tre » cuu tre, luy tre
duc van » duc va, duc tan, duc manh
thi van » thi lan, thi hanh, thi nang
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
tru » truc

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: tu ((sach ky) OR (sach ty)) nang xa hoi. thi van tham duc van hanh vi ((luu tre) OR (luu tru))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach ty)) nang xa hoi. thi van tham duc van hanh vi ((luu tre) or (luu tru))~".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sach ty)) nang xa hoi. thi van tham duc van hanh vi ((luu tre) or (luu tru))*.