Perhaps you should try some spelling variations:
chau tinh » cuu tinh, ha tinh, cua tinh
hoc chau » hoc chat, moc chau, hoc cau
dung cua » dung luan, dung cho
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban
ban cua » ban quan

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

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