Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh vatn » trinh van, trinh han, trinh san
trinh vat » trinh van, trinh luat, sinh vat
dung cong » dung trong
hoc dien » hoc hien, hoc vien, hoc dieu
dien anh » tieng anh, dien dan
vat dung » van dung, va dung, viet dung
vatn dau » van dau, bat dau, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dien anh - hanh trinh vat dung cong trinh vatn dau~.
• Adding a wildcard symbol may retrieve word variants: hoc dien anh - hanh trinh vat dung cong trinh vatn dau*.