Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
trinh nhan » trinh phan, trinh nha, trinh nhap
hoc thien » hoc hien, hoc thieu, hoc thiet
trinh han » trinh quan
thuc hung » thuc chung, thuc nhung, thuc dung
hung cong » nhung cong, hung cuong, phung cong
cong than » cong thanh, cong thang, cong tan
than phan » thanh phan, toan phan, thanh pham

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 - ((trinh nhan) OR (trinh han)) thuc hung cong than phan tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien hach - ((trinh nhan) OR (trinh han)) thuc hung cong than phan tu".
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - ((trinh nhan) OR (trinh han)) thuc hung cong than phan tu*.