Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
thien van » thi van
va doanh » van doanh, vay doanh, va danh
hieu van » hieu va, lieu va, hieu ve
cao hoi » cau hoi, co hoi, cao hoc
sach ky » sac ky, sach y, sach kem
sach ty » sach y, sach tu, sach thu
van cua » vang cua, ban cua, dan cua
xuc va » duc va, tuc va, luc va
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: thu ((sach ky) or (sach ty)) nang cao hoi. ((hieu van) OR (thien van)) cam xuc va doanh van cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sach ty)) nang cao hoi. ((hieu van) OR (thien van)) cam xuc va doanh van cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) or (sach ty)) nang cao hoi. ((hieu van) OR (thien van)) cam xuc va doanh van cua te*".