Perhaps you should try some spelling variations:
so sanh » do sanh
cao luc » bao luc, cao duc, cao suc
xang xa » lang xa, mang xa, ang xa
hieu ve » hieu van
lang di » lang dai, hang di, lang du
va lang » va nang, hoa lang
hieu va » hieu qua
di cua » dai cua, doi cua, de cua
luc va » duc va, tuc va, loc va
cua tu » cua tuc, cua su, cua cu
sanh y » sinh y, anh y, hanh y
y xang » ty xang

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh y xang xa hoi. ((hieu ve) or (((hieu va) OR (lieu va)))) cao luc va lang di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh y xang xa hoi. ((hieu ve) OR (((hieu va) OR (lieu va)))) cao luc va lang di cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh y xang xa hoi. ((hieu ve) or (((hieu va) OR (lieu va)))) cao luc va lang di cua tu*".