Perhaps you should try some spelling variations:
trinh cuang » trinh cung, trinh quang, trinh chuong
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
trong ban » trong san, trong tan, trong quan
ban toan » bai toan, ban than, van 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: hoc chieu xanh - hanh ((trinh cua) or (trinh cuang)) dung trong ban toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh ((trinh cua) OR (trinh cuang)) dung trong ban toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - hanh ((trinh cua) or (trinh cuang)) dung trong ban toan ban*.