Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hien sang » hien trang, khien bang, chieu sang
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
cong hach » cong sach, cong thanh, cong khanh
toan cao » toan tap
toan tai » toan tap, doanh tai, von tai
toan ban » van 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 hien sang - hanh trinh cua nhung cong hach ((((toan cao) or (toan tai))) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sang - hanh trinh cua nhung cong hach ((((toan cao) OR (toan tai))) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hien sang - hanh trinh cua nhung cong hach ((((toan cao) or (toan tai))) or (toan ban))*.