Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
hanh trung » thanh trung, hanh trang, manh trung
hoc thieu » toc thieu, hoc hien
cong manh » cong danh, duong manh, cong thanh
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
dai ung » dap ung, di ung, lai ung
dan ung » dan dung, dan vung, dang ung

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 trung ((dai ung) OR (dan ung)) cong manh ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu khang - hanh trung ((dai ung) OR (dan ung)) cong manh ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu khang - hanh trung ((dai ung) OR (dan ung)) cong manh ((toan cau) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu khang - hanh trung ((dai ung) OR (dan ung)) cong manh ((toan cau) or (toan cao))*.