Perhaps you should try some spelling variations:
hanh thich » hanh chinh, hanh trinh, hanh thiet
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
thich su » tich su, thich ngu, thich sai
hoc giao » hoc cao
thi hanh » thi thanh
don gian » dan gian
du hanh » dieu hanh, duy khanh, luu hanh
tinh so » tinh son, tinh soc, dinh so

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( du hanh thich su - hoc giao ) or ( thi hanh tinh so - don gian ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( du hanh thich su - hoc giao ) OR ( thi hanh tinh so - don gian ))*.