Perhaps you should try some spelling variations:
hoc thanh » hoan thanh, hoc phan, ha thanh
hoc nhanh » hoc nganh, hoc phan
sach moi » sach doi, sach hoi, bach mai
cuu nang » chuc nang, cam nang, cuu van
cuu toan » cuu hoan, cua toan, huu toan
toan tai » toan tap, doanh tai, toan ban
te sach » toc sach
moi tai » hoi tai, mo tai, moi thoi
hoi cuu » hoi chu, hoi cua, ho cuu
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: te sach moi tai, nghien cuu nang ((hoc thanh) or (hoc nhanh)) hoa hoc xa hoi cuu toan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach moi tai, nghien cuu nang ((hoc thanh) OR (hoc nhanh)) hoa hoc xa hoi cuu toan tai.
• Adding a wildcard symbol may retrieve word variants: te sach moi tai, nghien cuu nang ((hoc thanh) or (hoc nhanh)) hoa hoc xa hoi cuu toan tai*.