Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
quang suat » nang suat, quang cua, quang tuan
thong cong » trong cong, tong cong, thong thong
manh toan » thanh toan, anh tuan, tinh toan
ho chieu » theo chieu, hoc thieu, mot chieu
van toan » van tuan, van tan, van thanh

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 - nhanh quang suat thong cong ((manh toan) or (van toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - nhanh quang suat thong cong ((manh toan) OR (van toan)) tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - nhanh quang suat thong cong ((manh toan) or (van toan)) tap*.