Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
doanh van » doan van, doanh va, doanh ban
su triet » su viet, su tien, ve triet
kham luc » khai luoc, kham cuoc, nhan luc
cau treo » cau theo, cau tren, cau triet
thu bang » thu ban, thu hang, chu bang
luc van » luoc van, luu van, duc van
tu sach » thu sach, su sach, tu cach
hieu vu » hieu va, hieu ve, hieu su
bang xa » lang xa, bang va, mang xa
te sach » toc sach
vu kham » vu khanh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) OR (te sach)) thu bang xa hoi. hieu vu kham luc van doanh van ((cau treo) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) thu bang xa hoi. hieu vu kham luc van doanh van ((cau treo) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) thu bang xa hoi. hieu vu kham luc van doanh van ((cau treo) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) thu bang xa hoi. hieu vu kham luc van doanh van ((cau treo) or (su triet))*.