Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
canh trinh » canh tranh, hanh trinh, canh tinh
trinh qua » trinh quan, trinh cua, trinh quang
qua trong » quan trong, qua trinh, qua song
ho chieu » theo chieu, hoc thieu, doi chieu
tap toan » tap doan, tap quan
bai toan » bai tap

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 tinh - canh trinh qua trong cong ((tap toan) or (bai toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - canh trinh qua trong cong ((tap toan) OR (bai toan)) ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - canh trinh qua trong cong ((tap toan) or (bai toan)) ban*.