Perhaps you should try some spelling variations:
nganh chung » nhanh chuong, nganh cong, nhanh chong
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
cach thoi » cac thoi, cach thuc, cach noi
chung hoc » trung hoc, dung hoc, hung hoa
danh nhan » doanh nhan, thanh nhan, benh nhan
thoi dai » hoc dai, hoi dap, hoi dan
cong hoc » dong hoc, cong coc, cong ho
cong hoa » dong hoa, dong hoc, hang hoa
hoi danh » hop danh, hoi dan, hoc danh
tu cach » tu cac
nhan va » nhan tai, nhan dan, nhan tao
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: tu cach thoi dai, nghien thu ((cong hoc) OR (cong hoa)) nganh chung hoc ma hoi danh nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach thoi dai, nghien thu ((cong hoc) OR (cong hoa)) nganh chung hoc ma hoi danh nhan va".
• Adding a wildcard symbol may retrieve word variants: tu cach thoi dai, nghien thu ((cong hoc) OR (cong hoa)) nganh chung hoc ma hoi danh nhan va*.