Perhaps you should try some spelling variations:
thieu hach » thien hach, chieu sach, hieu cach
phung cong » nhung cong, phong cong, nhung chong
chuan chau » chuan chat, chuan ha, chua chay
hanh luan » khanh luan, hang luan, hanh luat
van phung » van phong, van hung, van chuong
cong hoan » cong hoa, dong hoa, cong san
van chat » cao chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu hach - hanh luan van phung cong hoan ((chuan chau) or (van chat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu hach - hanh luan van phung cong hoan ((chuan chau) OR (van chat)).
• Adding a wildcard symbol may retrieve word variants: toc thieu hach - hanh luan van phung cong hoan ((chuan chau) or (van chat))*.