Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh han
chau tinh » cuu tinh, ha tinh, cua tinh
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap
ho chau » ha chau, ho chu, o chau

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

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