Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
chat xuc » chat huu, cam xuc, chao xu
tu sach » thu sach, su sach, te sach
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
cac xuc » cam xuc, cac nuoc, cac cuoc
hieu ve » hieu va, hieu van

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 thu nang x ho. hieu ve ((cac xuc) OR (chat xuc)) van ((anh viet) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu nang x ho. hieu ve ((cac xuc) OR (chat xuc)) van ((anh viet) OR (hanh va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thu nang x ho. hieu ve ((cac xuc) OR (chat xuc)) van ((anh viet) or (hanh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach thu nang x ho. hieu ve ((cac xuc) OR (chat xuc)) van ((anh viet) or (hanh va)) cua tre*.