Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hang doi » hang di, hang loi, huong doi
hanh doi » thanh doi, hanh noi, hanh moi
ty vang » ty xang, ly vang, ty hang
hieu ve » hieu va, hieu van
cua xuc » cua duc, cua tuc, cua cuc
ve cua » le cua, de cua, te cua
xuc va » duc va, tuc va, luc va
ty van » ly van, ta van
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: thu sach ((ty vang) or (ty van)) xa hoi. hieu ve cua xuc va ((hanh doi) OR (hang doi)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ty vang) OR (ty van)) xa hoi. hieu ve cua xuc va ((hanh doi) OR (hang doi)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ty vang) or (ty van)) xa hoi. hieu ve cua xuc va ((hanh doi) OR (hang doi)) cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ty vang) or (ty van)) xa hoi. hieu ve cua xuc va ((hanh doi) OR (hang doi)) cua te*.