Perhaps you should try some spelling variations:
thanh thai » thanh hai, thanh tai, nhanh thai
van thanh » ban thanh, van tuan
dang hoa » dang hoai, dang khoa, dong hoa
duc van » duc va, duc tan, duc manh
cua tre » cuu tre, cua triet, dua tren
hieu ve » hieu va, hieu van
cao duc » dao duc, cao suc, giao duc
ve cao » va cao, ve bao, ve cac
sac ky » cac ky
cua te » cua tu

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) or (sac ky)) dang hoa hoc. hieu ve cao duc van thanh thai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sai ky) OR (sac ky)) dang hoa hoc. hieu ve cao duc van thanh thai ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su ((sai ky) or (sac ky)) dang hoa hoc. hieu ve cao duc van thanh thai ((cua tre) or (cua te))*.