Perhaps you should try some spelling variations:
hien bach » vien bach, thien hach, hien hanh
bieu hien » dieu hien, dieu khien, bien phien
bach luan » sach luan, bach xuan, hoach luan
cau tren » cu tren, dau tren, ca tren
su sach » so sach, vu sach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
luan va » luan van, luat va
va hang » van hang, va nang, va lang
va cau » van cau, va cac, va dau

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) or (te sach)) ky nang xa hoi. bieu hien bach luan va hang va cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) ky nang xa hoi. bieu hien bach luan va hang va cau tren.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (te sach)) ky nang xa hoi. bieu hien bach luan va hang va cau tren*.