Perhaps you should try some spelling variations:
thien van » thi van
van tham » van thanh, van tuan, van chat
van hanh » van thanh, ban hanh, van anh
tham duc » pham duc, tham du, than duc
duc van » duc va, duc tan, duc manh
nang xa » nang x, lang xa, nang ma
sach ty » sach tu, sach thu, xach tay

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