Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
van tuan » van quan, anh tuan
trang xa » trang va, trang ha, trong xa
cua tre » cua te, cuu tre, cua triet
hai cua » thai cua, dai cua, hoi cua
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
tang xa » tang ma, lang xa, tang ha
sac ky » cac ky, sai ky
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky ((tang xa) or (trang xa)) hoi. hieu ve cham duc ((van tuan) OR (van ban)) hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((tang xa) OR (trang xa)) hoi. hieu ve cham duc ((van tuan) OR (van ban)) hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky ((tang xa) or (trang xa)) hoi. hieu ve cham duc ((van tuan) OR (van ban)) hai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ky ((tang xa) or (trang xa)) hoi. hieu ve cham duc ((van tuan) OR (van ban)) hai cua tre*.