Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
xach tay » canh tay
thanh ve » hanh ve, thanh va, thanh vien
hieu van » hieu va, thien van, lieu va
bach ty » sach ty, bach thu
duc ban » duc tan, duc van, dua ban
cua tuc » cua tu, cua thuoc, luat tuc
van cam » van nam, van lam, van cau
cam duc » cam xuc, cao duc, pham duc
hang ca » hang va, nang cao, hang tai
cua duc » cua nuoc, cua quoc
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: vu ((bach ty) OR (xach tay)) hang ca hoi. hieu van cam duc ban thanh ve ((cua tuc) or (cua duc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((bach ty) OR (xach tay)) hang ca hoi. hieu van cam duc ban thanh ve ((cua tuc) OR (cua duc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((bach ty) OR (xach tay)) hang ca hoi. hieu van cam duc ban thanh ve ((cua tuc) or (cua duc))".
• Adding a wildcard symbol may retrieve word variants: vu ((bach ty) OR (xach tay)) hang ca hoi. hieu van cam duc ban thanh ve ((cua tuc) or (cua duc))*.