Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung bong » nhung cong, nhung bang, nhung chong
do chinh » hoc chinh, do dinh, te chinh
trinh va » trinh van, trinh vat, trinh ve
bong van » song van, tong van, hong van
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((do chinh) OR (mo hinh)) sach - hanh trinh va nhung bong van toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((do chinh) OR (mo hinh)) sach - hanh trinh va nhung bong van toan cao*".