Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
thang hoc » thang nhoc, than hoc, thanh hoc
thai doan » chan doan, tap doan, giai doan
doan nhan » doanh nhan, doan phan, hoang nhan
sach hoi » sach doi, sach moi, cach thoi
cong hoc » dong hoc, cong hoa, cong ho
cong coc » cong cuoc, cong cac, cong co
nhan van » nhan dan, nhan va, phan van
tu sach » thu sach, su sach, te sach
xa thai » ca thai, a thai, da thai
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach hoi dap, nghien cuu ((cong hoc) or (cong coc)) nhanh thang hoc xa thai doan nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoi dap, nghien cuu ((cong hoc) OR (cong coc)) nhanh thang hoc xa thai doan nhan van.
• Adding a wildcard symbol may retrieve word variants: tu sach hoi dap, nghien cuu ((cong hoc) or (cong coc)) nhanh thang hoc xa thai doan nhan van*.