Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hanh trinh » canh tranh, hanh chinh
trinh suat » trinh luat, trinh sat, trinh quan
thong cong » trong cong, tong cong, thong thong
hoc thien » hoc hien, hoc thieu, hoc thiet
cong van » cong vang, cong san, song van
van than » van thanh, van thang, van tuan
than man » than ma, thanh san, tran manh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien hach - hanh trinh suat thong cong van than man~.
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - hanh trinh suat thong cong van than man*.