Perhaps you should try some spelling variations:
trinh toan » tinh toan, thanh toan, trinh han
hoc thieu » toc thieu, hoc hien
trong dan » trong dang, trong san, trong tan
ho chieu » theo chieu, doi chieu, mot chieu
trinh su » trinh tu, trinh san, trinh cau
dan phan » doan phan, dan chan, van phan
phan cac » nhan cach, phan dau, phan lap

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) or (hoc thieu)) tinh - hanh ((trinh su) or (trinh toan)) dung trong dan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) tinh - hanh ((trinh su) OR (trinh toan)) dung trong dan phan cac.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) tinh - hanh ((trinh su) or (trinh toan)) dung trong dan phan cac*.