Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
thi cong » tai cong, thien cong
hanh tai » thanh tai, hang tai, han tai
sach thi » sach thu, sach tai, sach thieu
cua tre » cua te, cuu tre, cua triet
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
cong xa » cong xay, cong xua, cong ha
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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 thi cong xa hoi. hieu ve cham ((xuc va) OR (tuc va)) ((hanh tai) or (hang va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach thi cong xa hoi. hieu ve cham ((xuc va) OR (tuc va)) ((hanh tai) OR (hang va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach thi cong xa hoi. hieu ve cham ((xuc va) OR (tuc va)) ((hanh tai) or (hang va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach thi cong xa hoi. hieu ve cham ((xuc va) OR (tuc va)) ((hanh tai) or (hang va)) cua tre*.