Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
sach vuc » sach duoc, sach nuoc, sach truc
vuc nang » cuc nang, vu nang, chuc nang
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
van anh » tuan anh, van minh
su hien » su kien, su tien, thu hien
va cam » va cham, va cac, va cao
ki su » ky su

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 vuc nang xa hoi. hieu va cam xuc ((van anh) or (van thanh)) ki su hien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach vuc nang xa hoi. hieu va cam xuc ((van anh) OR (van thanh)) ki su hien.
• Adding a wildcard symbol may retrieve word variants: tu sach vuc nang xa hoi. hieu va cam xuc ((van anh) or (van thanh)) ki su hien*.