Perhaps you should try some spelling variations:
tuong chuc » thuong thuc, truong thuc, tuong chung
chuc nganh » chuc nang, hoc nganh, cac nganh
cuu tuong » cuu thuong, cuu tong, cuu phuong
sach hoc » cach hoc, sach hoi, mach hoc
gian dan » gian lang
vu sach » vu bach, su sach, vu khach
va gian » va gianh, van gian, va giai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach hoc tap, nghien cuu tuong chuc nganh ((khoa hoc) or (hoa hoc)) xa hoi va gian dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach hoc tap, nghien cuu tuong chuc nganh ((khoa hoc) OR (hoa hoc)) xa hoi va gian dan.
• Adding a wildcard symbol may retrieve word variants: vu sach hoc tap, nghien cuu tuong chuc nganh ((khoa hoc) or (hoa hoc)) xa hoi va gian dan*.