Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
van hanh » ban hanh, van anh, van ban
tu sach » thu sach, su sach, te sach
lai cho » lai chau, bai choi, lai cuoc
cac luc » cau luc, coc luc, cac nuoc
hieu ve » hieu va, hieu van
tu nano » truc nano
tu nang » tru nang, tu nong, tu lang
cho tre » cho thue, khoe tre
ve cac » va cac, vien cac
x hoi » xa hoi, o hoi, x ho

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 (tu nano)) x hoi. hieu ve cac luc ((van hanh) or (van thanh)) lai cho tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tu nang) OR (tu nano)) x hoi. hieu ve cac luc ((van hanh) OR (van thanh)) lai cho tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((tu nang) OR (tu nano)) x hoi. hieu ve cac luc ((van hanh) or (van thanh)) lai cho tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((tu nang) OR (tu nano)) x hoi. hieu ve cac luc ((van hanh) or (van thanh)) lai cho tre*.