Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hiem ngan » kim ngan, viem gan
trinh xay » trinh ky
trong van » trong cac
van thanh » ban thanh, van tuan
thanh cau » thanh chau, thanh mau, nhanh cau
hoc hiem » hoc hien, hoc thieu, hoc thiet

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hiem ngan - hanh trinh xay dung trong van thanh cau~.
• Adding a wildcard symbol may retrieve word variants: hoc hiem ngan - hanh trinh xay dung trong van thanh cau*.