Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thien hach » thien thanh, hien hanh
hoc thien » hoc hien, hoc thieu, hoc thiet
chinh tai » chinh tri
chinh va » chinh ta, hanh va, tinh va
cong san » cong tac
toan cao » toan ban
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 ((chinh va) or (chinh tai)) nhung cong san ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - hanh ((chinh va) OR (chinh tai)) nhung cong san ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - hanh ((chinh va) or (chinh tai)) nhung cong san ((toan cao) or (toan tap))*.