Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va thanh » va tinh, le thanh
dong mau » dong ma, dang mau, dong ha
cua tre » cua te, cuu tre, cua triet
hai cua » thai cua, dai cua, hoi cua
cau luc » cau truc, cau phuc
hieu ve » hieu va, hieu van
mau hoi » cau hoi, mai hoi, mau ho
ky dong » ly dong, ky dang, ky cong
sac ky » cac ky, sai ky
ve cau » ke cau, va cau, ve cac
tu sac » tu sach, tu cac, tu san

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky dong mau hoi. hieu ve cau luc ((((va thanh) OR (ban thanh))) or (gia thanh)) hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky dong mau hoi. hieu ve cau luc ((((va thanh) OR (ban thanh))) OR (gia thanh)) hai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky dong mau hoi. hieu ve cau luc ((((va thanh) OR (ban thanh))) or (gia thanh)) hai cua tre*".