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