Perhaps you should try some spelling variations:
dong tuong » dong thuong, dong thong, dong duong
chieu xanh » chieu sach, chieu sang, chieu tinh
dong trong » duong trong, dung trong, cong trong
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh manh » hanh mang, lanh manh, hoang manh
manh cua » doanh cua, ban cua
tac toan » tap toan, tam toan, hach 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: hoc chieu xanh - hanh manh cua ((dong tuong) or (dong trong)) tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh manh cua ((dong tuong) OR (dong trong)) tac toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - hanh manh cua ((dong tuong) or (dong trong)) tac toan tap*.