Perhaps you should try some spelling variations:
thanh hoa » thanh pho
quoc bao » quoc oai, hoc bao, quoc va
quoc ban » quoc lan, quoc quan, quoc binh
te sach » toc sach
hoa cua » hoa chat, hoa xuat
cua tre » cua te, cuu tre, cua triet
cao hoi » cau hoi, co hoi, cao hoc
y nang » ky nang, ly nang, v nang
ve cam » ve cham, va cam, ve cai
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: te sach y nang cao hoi. hieu ((ve cam) OR (ve cac)) ((quoc ban) or (quoc bao)) thanh hoa cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang cao hoi. hieu ((ve cam) OR (ve cac)) ((quoc ban) OR (quoc bao)) thanh hoa cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang cao hoi. hieu ((ve cam) OR (ve cac)) ((quoc ban) or (quoc bao)) thanh hoa cua tre*".