Perhaps you should try some spelling variations:
cham loc » cham soc, chon loc, cham o
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
va cham » va chat, va tham
vai cua » dai cua, hai cua, lai cua
sac ky » cac ky, sai ky
loc va » hoc va, luc va
va don » va dong, va doc, va do
vi 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 y) or (sac ky)) dang xa hoi. hieu va cham loc va don ((vi cua) OR (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach y) OR (sac ky)) dang xa hoi. hieu va cham loc va don ((vi cua) OR (vai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach y) or (sac ky)) dang xa hoi. hieu va cham loc va don ((vi cua) OR (vai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach y) or (sac ky)) dang xa hoi. hieu va cham loc va don ((vi cua) OR (vai cua)) tre*.