Perhaps you should try some spelling variations:
su sach » so sach, vu sach
san cua » sang cua, ban cua, dan cua
hoc van » hoc dan, hoc va, hoc vat
loc van » luoc van, lo van, loc va
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
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: su sach ky dang xa hoi. ((hieu ve) OR (hieu va)) cam ((loc van) or (hoc van)) thanh san cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky dang xa hoi. ((hieu ve) OR (hieu va)) cam ((loc van) OR (hoc van)) thanh san cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky dang xa hoi. ((hieu ve) OR (hieu va)) cam ((loc van) or (hoc van)) thanh san cua te*".