Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
goc nganh » hoc nganh, hoc nhanh, cac nganh
sach hoi » sach doi, sach moi, cach thoi
van tuan » van quan, van ban, anh tuan
tuan san » luan san, tan san, thanh san
su sach » so sach, vu sach
hoi tai » hoc tai, hoi trac
cuu mot » cua mot, cuu mo, huu mot
hoc may » hoc ma
hoc bai » hoc dai, hoc giai
hoi van » hoi va, hoi dan, hai van

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach hoi tai, nghien cuu mot goc nganh cong ((hoc may) or (hoc bai)) hoi van tuan san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach hoi tai, nghien cuu mot goc nganh cong ((hoc may) OR (hoc bai)) hoi van tuan san.
• Adding a wildcard symbol may retrieve word variants: su sach hoi tai, nghien cuu mot goc nganh cong ((hoc may) or (hoc bai)) hoi van tuan san*.