Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung lang
hanh trung » thanh trung, hanh trang, manh trung
hieu lang » chieu sang, hieu quang, nhieu tang
trung cua » truong cua, trung tuan, trung cap
nhung don » nhung van, nhung bo
dung cong » dung trong
hoc hieu » hoc thieu, hoc hien, doc hieu
tac toan » tap toan, tam toan, hach 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: hoc hieu lang - hanh trung cua ((((nhung cong) or (nhung don))) or (dung cong)) tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - hanh trung cua ((((nhung cong) OR (nhung don))) OR (dung cong)) tac toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - hanh trung cua ((((nhung cong) or (nhung don))) or (dung cong)) tac toan cao*.