Perhaps you should try some spelling variations:
hoc thieu » toc thieu
hanh mang » nhanh mang, hanh trang, nhanh lang
mang luan » tang luan, hang luan, bang luan
nhung cau » chung cu, nhung bai, nhu cau
dung cong » dung trong
manh toan » thanh toan, anh tuan, tinh toan
toan cau » 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 thieu) or (hoc hien)) tach - hanh mang luan ((nhung cau) or (dung cong)) manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) tach - hanh mang luan ((nhung cau) OR (dung cong)) manh toan cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) tach - hanh mang luan ((nhung cau) or (dung cong)) manh toan cau*.