Perhaps you should try some spelling variations:
danh van » doanh van, dang van, dinh van
su sach » so sach, vu sach
van cua » vang cua, ban cua, dan cua
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va
loc va » hoc va

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 y ((nang xa) OR (nang ma)) hoi. hieu ve cham ((luc va) or (loc va)) danh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang xa) OR (nang ma)) hoi. hieu ve cham ((luc va) OR (loc va)) danh van cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((nang xa) OR (nang ma)) hoi. hieu ve cham ((luc va) or (loc va)) danh van cua tre*".