Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty hang » ly hang, ty xang, thi hang
hang xa » hoang xa, hang va, hang ca
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
va cam » va cham, va cac, va cao

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 ty hang xa hoi. hieu va cam duc ban thanh vai ((su triet) or (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty hang xa hoi. hieu va cam duc ban thanh vai ((su triet) OR (hoa viet)).
• Adding a wildcard symbol may retrieve word variants: su sach ty hang xa hoi. hieu va cam duc ban thanh vai ((su triet) or (hoa viet))*.