Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hoc thien » hoc hien, hoc thieu, hoc thiet
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua nhung » va nhung
tinh cua » trinh cua, sinh cua, tinh chat
cong dan » cong tan, huong dan, cong tac
cong san » cong tac
toan cau » toan cao, toan ban, toan tap

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 tinh cua nhung ((((cong dan) or (cong dong))) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - hanh tinh cua nhung ((((cong dan) OR (cong dong))) OR (cong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - hanh tinh cua nhung ((((cong dan) or (cong dong))) or (cong san)) toan cau*.