Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
quan trong » gian trong
hoc thieu » toc thieu, hoc hien
cua trong » cua truong, cua trung, qua trong
dat quang » dau quang, chat quang, dang quang
cong dat » cong dan, dong dat, cong da
quang va » quang van, quan va, quang ma

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 - canh tranh ((cua trong) or (quan trong)) cong dat quang va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu khang - canh tranh ((cua trong) OR (quan trong)) cong dat quang va.
• Adding a wildcard symbol may retrieve word variants: hoc thieu khang - canh tranh ((cua trong) or (quan trong)) cong dat quang va*.