Perhaps you should try some spelling variations:
thi hanh » thi thanh
sach thi » sach thu, sach tai, sach thieu
su sach » so sach, vu sach
hanh xa » hanh va, hanh ma, hanh xu
hieu ve » hieu va, hieu van
cua tre » cuu tre, cua triet, dua tren
cau luc » cau truc, cau phuc
xanh di » danh di, vanh dai, xanh tai
anh va » hanh va
luc va » duc va, tuc va, loc va
ve cau » ke cau, va cau, ve cac
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thi hanh xa hoi. hieu ve cau luc va ((anh va) OR (xanh di)) ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thi hanh xa hoi. hieu ve cau luc va ((anh va) or (xanh di)) ((cua tre) OR (cua te))~".
• Adding a wildcard symbol may retrieve word variants: su sach thi hanh xa hoi. hieu ve cau luc va ((anh va) or (xanh di)) ((cua tre) OR (cua te))*.