Perhaps you should try some spelling variations:
thien tinh » khien tinh, thien minh, tien tinh
hanh trinh » hanh chinh
nhung cong » dung cong, thong cong, hang cong
hoc thien » hoc hien, hoc thieu, hoc thiet
cong dan » cong san, cong tan, huong dan
than cau » phan cau, than cap, thanh chau
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 tinh - ((hanh trinh) or (canh tranh)) va nhung cong dan ((than cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien tinh - ((hanh trinh) OR (canh tranh)) va nhung cong dan ((than cau) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc thien tinh - ((hanh trinh) or (canh tranh)) va nhung cong dan ((than cau) or (toan cau))*.