Perhaps you should try some spelling variations:
trinh trong » trinh truong, trinh trung, trinh cong
tranh trong » tran trong, anh trong, tran thong
chieu xanh » chieu sach, chieu sang, chieu tinh
ho chieu » theo chieu, hoc thieu, doi chieu
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan ban » van 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 chieu xanh - ((tranh trong) OR (trinh trong)) gian trong cong tap toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - ((tranh trong) OR (trinh trong)) gian trong cong tap toan ban".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - ((tranh trong) OR (trinh trong)) gian trong cong tap toan ban*.