Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
vien cac » vien bach, vien dai, gian cac
thanh vi » hanh vi, thanh va, thanh ve
sach thu » sach thue, sach thieu, sach tham
vien da » vien dai, hien dai
xuc van » duc van, luc van, vuc van
sach ty » sach y, sach tu, xach tay
nang xa » nang x, lang xa, nang ma
vi cua » vai cua, di cua
cua cu » cua chu, cua cau, cua su

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 ty) or (sach thu)) nang xa hoi. hieu ((vien cac) OR (vien da)) xuc van thanh vi cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach thu)) nang xa hoi. hieu ((vien cac) OR (vien da)) xuc van thanh vi cua cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) or (sach thu)) nang xa hoi. hieu ((vien cac) OR (vien da)) xuc van thanh vi cua cu".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach thu)) nang xa hoi. hieu ((vien cac) OR (vien da)) xuc van thanh vi cua cu*.