Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hanh trinh » canh tranh
hoc thien » hoc hien, hoc thieu, hoc thiet
dung cong » dung trong
cong van » cong vang, cong san, song van
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
va dung » van dung, va duong, vat dung

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 trinh) or (hanh chinh)) va dung cong van ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - ((hanh trinh) OR (hanh chinh)) va dung cong van ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - ((hanh trinh) or (hanh chinh)) va dung cong van ((toan cau) or (toan cao))*.