Perhaps you should try some spelling variations:
thanh thai » thanh hai, thanh tai, nhanh thai
ban thanh » ban hanh, ban hang
va triet » va thiet, va trien, ve triet
hieu van » hieu va, thien van, lieu va
tang xa » trang xa, tang ma, lang xa
sach ky » sach ty, sach kem, sach hay
van cam » van nam, van lam, van cau
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
thai va » thai van
sac ky » cac ky, sai ky

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

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