Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
dang van » hoang van, hang va
su sach » so sach, vu sach
xuc van » duc van, luc van, vuc van
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
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: su sach ky ((lang xa) or (dang van)) hoi. hieu ((ve cam) OR (ve cac)) xuc van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((lang xa) OR (dang van)) hoi. hieu ((ve cam) OR (ve cac)) xuc van hanh vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((lang xa) or (dang van)) hoi. hieu ((ve cam) OR (ve cac)) xuc van hanh vi cua te*".