Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh mang » nhanh mang, hanh trang, nhanh lang
qua trong » quan trong, qua song, qua cong
qua trinh » qua kinh
ho chieu » theo chieu, hoc thieu, doi chieu
cong tap » cuong tap, cong tac, cong tan
doan tap » toan tap, doanh tai, doan tuan
doan cap » doanh cao, dan ca, toan cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - hanh mang ((qua trong) or (qua trinh)) cong tap ((doan tap) OR (doan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh mang ((qua trong) OR (qua trinh)) cong tap ((doan tap) OR (doan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh mang ((qua trong) or (qua trinh)) cong tap ((doan tap) OR (doan cap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh mang ((qua trong) or (qua trinh)) cong tap ((doan tap) OR (doan cap))*.