Perhaps you should try some spelling variations:
bang thanh » ban thanh, dang thanh, tang thanh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh vat » trinh vat, tranh va, tranh van
dung cong » dung trong
hoc bang » hoc bong, hoc tang, hoc dan
vat dung » van dung, va dung, viet dung
cong anh » cong danh, dong anh, hong anh
tuan ban » tuan bang, toan ban, luan 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 bang thanh - hanh tranh vat dung cong anh tuan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc bang thanh - hanh tranh vat dung cong anh tuan ban*.