Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
hanh huong » thanh huong, anh huong, manh huong
hoc nhanh » hoc nganh, hoc phan
chung hoc » trung hoc, dung hoc, phung ho
hang toan » hang ton, dang toan, hoang thoan
huong tac » tuong tac, huong tam, muong tac
dong hoc » dong co, dong luc
cac dong » cac duong, cac cong, cac dang
hung hoa » hang hoa, ung hoa, trung hoa
dan hang » ban hang, van hang, dat hang
hoi dan » hoa dan, hoc dan, hoi dap
du hanh » dieu hanh, duy khanh, luu hanh
ma hoi » mai hoi, xa hoi, ma hoa

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 huong tac, nghien cac dong hoc nhanh ((chung hoc) OR (hung hoa)) ma hoi dan hang toan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "du hanh huong tac, nghien cac dong hoc nhanh ((chung hoc) OR (hung hoa)) ma hoi dan hang toan".
• Adding a wildcard symbol may retrieve word variants: du hanh huong tac, nghien cac dong hoc nhanh ((chung hoc) OR (hung hoa)) ma hoi dan hang toan*.