Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hoc thien » hoc hien, hoc thieu, hoc thiet
trinh cua » tinh cua, trinh quan, trinh luan
hang cong » dang cong, hang nong, bang cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan 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 thien hach - hanh ((trinh cua) OR (trinh luat)) hang cong dan toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien hach - hanh ((trinh cua) OR (trinh luat)) hang cong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - hanh ((trinh cua) OR (trinh luat)) hang cong dan toan tap*.