Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
cau luc » cau truc, cau phuc
tu sach » su sach, te sach, tu cach
vu nang » vuc nang, va nang, vu dang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
lang di » lang dai, hang di, lang du
cam luc » cam xuc
va lang » va nang, hoa lang
di cua » dai cua, doi cua, de cua
cua su » qua su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (tu sach)) vu nang xa hoi. hieu ve ((cam luc) or (cau luc)) va lang di cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) vu nang xa hoi. hieu ve ((cam luc) OR (cau luc)) va lang di cua su.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (tu sach)) vu nang xa hoi. hieu ve ((cam luc) or (cau luc)) va lang di cua su*.