Perhaps you should try some spelling variations:
nhung chong » nhung cong, nhung phong, nhung phuong
hanh trinh » canh tranh, hanh chinh
hanh manh » hanh mang, lanh manh, hoang manh
cua nhung » va nhung
chong van » thong van, hong van, phong van
kim ngan » kim ngoc
toan cao » toan tap
toan ban » van ban
hoc kim » hoc ki, nhuoc kim, hoc kinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc kim ngan - ((hanh manh) or (hanh trinh)) cua nhung chong van ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc kim ngan - ((hanh manh) OR (hanh trinh)) cua nhung chong van ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc kim ngan - ((hanh manh) or (hanh trinh)) cua nhung chong van ((toan cao) or (toan ban))*.