Perhaps you should try some spelling variations:
doanh chung » doanh nhung, doanh thuong, doan hung
giai doanh » giai doan, trai doanh, lai doanh
chung minh » phung minh, thong minh, chinh minh
cong thong » cong thuong, cong trong, dong thong
sach tham » sach nha
giai cong » gia cong, giao cong, giai phong
tu sach » thu sach, su sach, te sach
tham va » pham va, thai va, than va
ca me » cha me, ca ve
tin » tinh

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 tham va giai doanh chung minh ) or ( tu sach ((ca me) or (ba me)) giai cong thong tin ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tham va giai doanh chung minh ) OR ( tu sach ((ca me) OR (ba me)) giai cong thong tin )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tham va giai doanh chung minh ) or ( tu sach ((ca me) or (ba me)) giai cong thong tin ))*.