Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
tan hanh » tan thanh, tang hanh, toan hanh
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
cam duc » cam xuc, cao duc, pham duc
ty hang » ly hang, thi hang, thu hang
cua tre » cua te, cuu tre, dua tren
su sach » so sach, vu sach
ca hoi » cau hoi, cua hoi, xa hoi

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) OR (ty xang)) ca hoi. hieu van cam duc tan hanh vai ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty hang) OR (ty xang)) ca hoi. hieu van cam duc tan hanh vai ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ((ty hang) OR (ty xang)) ca hoi. hieu van cam duc tan hanh vai ((cua tre) OR (cua triet))*.