Perhaps you should try some spelling variations:
thanh dung » thanh duong, thanh tung, thanh hung
hieu manh » chieu xanh, hieu nganh, dieu hanh
dung cong » dung trong
hoc hieu » hoc thieu, hoc hien, doc hieu
dung cua » dung luan, dung cho
cua dung » cua dang, cua dong, qua dung
cong ban » cong bang, cong san, cong tan
phan cau » phan dau, phan cac, phan tu
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - thanh dung cua dung cong ban ((phan cau) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - thanh dung cua dung cong ban ((phan cau) OR (phan lap)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh dung cua dung cong ban ((phan cau) or (phan lap))*.