Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh doanh » hang doanh, chinh doanh, doanh doanh
dang thong » dang thuong, dong thong, dang trong
mang thong » mang trong, hang thuong, dang thuong
quang tran » quang tuan, quang trung, quang thanh
doanh cua » doanh luan
tran van » luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sach - hanh doanh cua ((dang thong) or (mang thong)) quang tran van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - hanh doanh cua ((dang thong) OR (mang thong)) quang tran van.
• Adding a wildcard symbol may retrieve word variants: toc thieu sach - hanh doanh cua ((dang thong) or (mang thong)) quang tran van*.