Perhaps you should try some spelling variations:
nhanh chong » thanh cong, khanh phong
chong thuoc » khong thuoc, cong thuc, hong phuoc
sach hoi » sach doi, sach moi, cach thoi
dong hoc » dong co
dong luc » nang luc
thuoc xa » thuoc ma, thuoc va, thuoc la
nhan tai » hang tai, van tai, toan tai
te sach » toc sach
va nhan » van nhan, ca nhan, va phan

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 hoi dap, nghien cuu ((dong hoc) OR (dong luc)) nhanh chong thuoc xa hoi va nhan tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach hoi dap, nghien cuu ((dong hoc) OR (dong luc)) nhanh chong thuoc xa hoi va nhan tai".
• Adding a wildcard symbol may retrieve word variants: te sach hoi dap, nghien cuu ((dong hoc) OR (dong luc)) nhanh chong thuoc xa hoi va nhan tai*.