Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
khang xa » khang a, hang ca, lang xa
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
ve cam » ve cac, va cam, ve cau
ve cai » va cai, ve cac, ve tai
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach thieu khang xa hoi. hieu ((((ve cam) or (ve cai))) or (ve cham)) xuc va hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thieu khang xa hoi. hieu ((((ve cam) OR (ve cai))) OR (ve cham)) xuc va hanh vi cua viet.
• Adding a wildcard symbol may retrieve word variants: tu sach thieu khang xa hoi. hieu ((((ve cam) or (ve cai))) or (ve cham)) xuc va hanh vi cua viet*.