Perhaps you should try some spelling variations:
sach thue » sach thu, sach thieu, sach tham
thue nang » thien nang, thuat nang, thi nang
van hanh » van thanh, ban hanh, van ban
te sach » toc sach
van anh » van thanh, tuan anh, van minh
cau luc » cau truc, cau phuc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve cau » ke cau, va cau, ve cac
de cua » le cua, dieu cua
te cua » tue cua, le cua

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 thue nang xa hoi. hieu ve cau luc ((van hanh) or (van anh)) ((de cua) OR (te cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thue nang xa hoi. hieu ve cau luc ((van hanh) OR (van anh)) ((de cua) OR (te cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thue nang xa hoi. hieu ve cau luc ((van hanh) or (van anh)) ((de cua) OR (te cua)) tre*".