Perhaps you should try some spelling variations:
tan thanh » tran thanh, tang thanh, toan thanh
thanh hai » thanh phan, thanh hoa, thanh san
tang xa » trang xa, lang xa, tang ha
cua tre » cuu tre, cua triet, dua tren
tang ma » mang may, tang van
v pham » vi pham, d pham
su xac » pu xac, su cac
hieu v » hieu va, hieu ve, hieu 2
xac ky » cac ky, sac ky, bac 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 xac ky ((tang xa) or (tang ma)) hoi. hieu v pham duc tan thanh hai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac ky ((tang xa) OR (tang ma)) hoi. hieu v pham duc tan thanh hai ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su xac ky ((tang xa) or (tang ma)) hoi. hieu v pham duc tan thanh hai ((cua tre) or (cua te))*.