Perhaps you should try some spelling variations:
dap trong » dat trong, dao trong, dai trong
thu nang » thi nang, thu hang, thu bang
luc ngan » luc nganh, luc nhan, luat ngan
so sach » bo sach, co sach, hoc sach
so sanh » do sanh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cau luc » cau truc, cau phuc
ve cau » ke cau, va cau, ve cac
va dap » va dao, va dau
hang » dang, bang, hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (so sanh)) thu nang xa hoi. hieu ve cau luc ngan hang va dap trong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) thu nang xa hoi. hieu ve cau luc ngan hang va dap trong.
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (so sanh)) thu nang xa hoi. hieu ve cau luc ngan hang va dap trong*.