Perhaps you should try some spelling variations:
thai cua » than cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
van anh » van thanh, tuan anh, van minh
cac duc » cac du, cao duc, cac dac
hieu ve » hieu va, hieu van
dang ha » dung ha, lang ha, tang ha
dong ha » dong hoa, dong va, dong hoc
sai ky » sac ky
ve cac » va cac, vien cac
su sai » su tai, su hai, su dai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ky ((dang ha) or (dong ha)) hoi. hieu ve cac duc ((van ban) or (van anh)) thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky ((dang ha) OR (dong ha)) hoi. hieu ve cac duc ((van ban) OR (van anh)) thai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sai ky ((dang ha) or (dong ha)) hoi. hieu ve cac duc ((van ban) or (van anh)) thai cua tre*.