Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
trinh quan » tinh quang, trinh han
hoc thien » hoc hien, hoc thieu, hoc thiet
dong van » duong van, dang van, dong va
dong von » dung von, dong co, dong hoc
toan cau » toan cao, toan ban, toan tap
luat » luan, xuat

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 quan) or (trinh luat)) thuong ((dong van) OR (dong von)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - hanh ((trinh quan) OR (trinh luat)) thuong ((dong van) OR (dong von)) toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien hach - hanh ((trinh quan) or (trinh luat)) thuong ((dong van) OR (dong von)) toan cau*".