Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
ban hanh » ban hang
tru nang » tra nang, tri nang, thi nang
hieu ve » hieu va, hieu van
tai cua » thai cua, tai cuc, tri cua
xuc ban » duc ban, cuc ban, quoc ban
cac xuc » cam xuc, cac nuoc, chat xuc
tu sach » thu sach, su sach, te sach
cao hoc » co hoc, cho hoc, chat hoc
tu nang » tu nong, tu nano, tu lang
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac

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 ((tu nang) or (((tru nang) OR (truc nano)))) cao hoc. hieu ve cac xuc ban hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tu nang) OR (((tru nang) OR (truc nano)))) cao hoc. hieu ve cac xuc ban hanh tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((tu nang) or (((tru nang) OR (truc nano)))) cao hoc. hieu ve cac xuc ban hanh tai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((tu nang) or (((tru nang) OR (truc nano)))) cao hoc. hieu ve cac xuc ban hanh tai cua tre*.