Perhaps you should try some spelling variations:
chiet tach » chieu sach
hieu quang » thieu quang, hieu quan, hieu qua
hanh trinh » canh tranh, hanh chinh
hang trong » hoang trong, thang trong, hanh trong
lang trong » dung trong, cong trong, dong trong
sinh toan » tinh toan, hinh toan, minh toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chiet tach) or (hieu quang)) - hanh trinh luat ((hang trong) or (lang trong)) sinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chiet tach) OR (hieu quang)) - hanh trinh luat ((hang trong) OR (lang trong)) sinh toan tap.
• Adding a wildcard symbol may retrieve word variants: ho ((chiet tach) or (hieu quang)) - hanh trinh luat ((hang trong) or (lang trong)) sinh toan tap*.