Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
manh toan » thanh toan, tinh toan
nhung bo » nhung bi, nhung bai, nhung don

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 khang - hanh trinh quan ((nhung bo) or (dung cong)) ((manh toan) or (anh tuan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu khang - hanh trinh quan ((nhung bo) OR (dung cong)) ((manh toan) OR (anh tuan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu khang - hanh trinh quan ((nhung bo) or (dung cong)) ((manh toan) or (anh tuan)) cao*.