Perhaps you should try some spelling variations:
luat khong » luat thong, luat thuong, suat thong
hanh trinh » canh tranh, hanh chinh
hoc vien » hoc hien, hoc tieng, hoc vi
hoc viet » hoc hien
tang tan » tang van, tang tai, tang dan
cong tac » cong ty
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 vien) OR (hoc viet)) anh - hanh trinh luat khong ((tang tan) or (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc vien) OR (hoc viet)) anh - hanh trinh luat khong ((tang tan) OR (cong tac)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc vien) OR (hoc viet)) anh - hanh trinh luat khong ((tang tan) or (cong tac)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc vien) OR (hoc viet)) anh - hanh trinh luat khong ((tang tan) or (cong tac)) toan cao*.