Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
thieu sang » chieu sang, thieu quang, hieu lang
hieu viec » nhieu viec, hieu ve, sieu viet
hanh vai » hanh vi, hanh va, hanh tai
cac viet » cach viet, bac viet, ca viet
te sach » toc sach
viec da » viec dat, vien da, viec va
va hanh » van hanh, va thanh, va danh
vai cac » va cac, tai cac, voi cac
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((thieu sang) OR (thieu khang)) ma hoi. hieu viec da xuc va hanh vai cac viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((thieu sang) OR (thieu khang)) ma hoi. hieu viec da xuc va hanh vai cac viet".
• Adding a wildcard symbol may retrieve word variants: te sach ((thieu sang) OR (thieu khang)) ma hoi. hieu viec da xuc va hanh vai cac viet*.