Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
sanh thieu » sach thieu, thanh thieu, hanh thiet
hanh vai » hanh vi, hanh va, hanh tai
van hai » van ha, van chat, van hanh
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
chua va » chuc va, chua may, chuan ha
va kham » va cham, va khao, va tham
mai hoi » mai khoi, dai hoi, lai hoi
ma hoi » xa hoi, ma hoa, me hoi
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: do sanh thieu khang ((ma hoi) OR (mai hoi)). hieu ((va kham) or (van hai)) chua va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: do sanh thieu khang ((ma hoi) OR (mai hoi)). hieu ((va kham) OR (van hai)) chua va hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "do sanh thieu khang ((ma hoi) OR (mai hoi)). hieu ((va kham) or (van hai)) chua va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: do sanh thieu khang ((ma hoi) OR (mai hoi)). hieu ((va kham) or (van hai)) chua va hanh vai cua te*.