Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, hong phuoc, dong thuoc
nhanh khong » nhanh chong, nganh khong, nhan khong
hoc nhanh » hoc nganh, hoc phan
thuoc lai » thuoc tai, thuoc la, thuoc sai
sach moi » sach doi, sach hoi, bach mai
cuu cong » cua cong, cac cong
nhan van » nhan dan, nhan va, phan van
su sach » so sach, vu sach
moi tai » hoi tai, mo tai, moi thoi
lai hoi » dai hoi, lai hoa, lai roi
hoi ca » hoi cua, hoi cac, hoi cau

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 moi tai, nghien ((cuu cong) or (thu cong)) hoc nhanh khong thuoc lai hoi ca nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach moi tai, nghien ((cuu cong) OR (thu cong)) hoc nhanh khong thuoc lai hoi ca nhan van.
• Adding a wildcard symbol may retrieve word variants: su sach moi tai, nghien ((cuu cong) or (thu cong)) hoc nhanh khong thuoc lai hoi ca nhan van*.