Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh han
bang cong » dang cong, bang song, hang cong
pha tinh » phap tinh, pham tinh, ha tinh
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
ha pha » kham pha, hoa phan, khai pha

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ha pha tinh - hanh ((trinh quan) or (trinh luat)) bang cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ha pha tinh - hanh ((trinh quan) OR (trinh luat)) bang cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ha pha tinh - hanh ((trinh quan) or (trinh luat)) bang cong tac toan cau*.