Perhaps you should try some spelling variations:
thanh than » thanh thanh, thanh thang, thanh toan
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
than cua » nhan cua, thai cua, ban cua
cua tre » cua te, cuu tre, cua triet
tang xa » trang xa, lang xa, tang ha
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
tang ma » mang may, tang van
van cam » van nam, van lam, van cau
su sai » su hai, su dai, su mai
su tai » su thi, tu tai

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) or (su tai)) ky ((tang xa) OR (tang ma)) hoi. hieu van cam duc van thanh than cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sai) OR (su tai)) ky ((tang xa) OR (tang ma)) hoi. hieu van cam duc van thanh than cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sai) or (su tai)) ky ((tang xa) OR (tang ma)) hoi. hieu van cam duc van thanh than cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sai) or (su tai)) ky ((tang xa) OR (tang ma)) hoi. hieu van cam duc van thanh than cua tre*.