Perhaps you should try some spelling variations:
luat chung » luan chung, luat thuong, cua chung
hanh trinh » canh tranh, hanh chinh
hien lang » hieu lang, tien lang, hien trang
luat dung » suat dung, luat quang, thuat dung
doi hien » doi dien, doi bien, doi kien
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
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: doi hien lang - hanh trinh ((luat dung) OR (luat chung)) cong tap toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi hien lang - hanh trinh ((luat dung) OR (luat chung)) cong tap toan ban".
• Adding a wildcard symbol may retrieve word variants: doi hien lang - hanh trinh ((luat dung) OR (luat chung)) cong tap toan ban*.