Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
trinh nghe » trinh nghien, trinh he, trinh nha
nghe thong » he thong
thong cong » trong cong, tong cong, thong thong
hoc dieu » hoc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dieu hanh - canh trinh nghe thong cong dan toan tap~.
• Adding a wildcard symbol may retrieve word variants: hoc dieu hanh - canh trinh nghe thong cong dan toan tap*.