Perhaps you should try some spelling variations:
ngan khong » nganh khong, nhan khong, ngan hang
sach hoi » sach doi, cach thoi, hoach hoi
sach moi » sach doi, bach mai, sach bai
tinh luc » tinh duc, dinh luc, tinh khuc
luc ngan » luc nganh, luc nhan, luat ngan
khong do » khong co, khong lo, khong de
van nhan » van phan, van thanh, danh nhan
nhan van » nhan dan, nhan va, phan van
hoi van » hoi va, hoi dan, hai van
do xa » doi xa, do va, o xa

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) or (sach moi)) tap, nghien cuu tinh luc ngan khong do xa hoi van nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach hoi) OR (sach moi)) tap, nghien cuu tinh luc ngan khong do xa hoi van nhan van.
• Adding a wildcard symbol may retrieve word variants: tu ((sach hoi) or (sach moi)) tap, nghien cuu tinh luc ngan khong do xa hoi van nhan van*.