Perhaps you should try some spelling variations:
chau tinh » cuu tinh, ha tinh, cua tinh
trinh cua » tinh cua, trinh quan, trinh luan
dung cong » dung trong
hat chau » ha chau, lai chau, hat nhan
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

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