Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tieu sach » chieu sach, dien sach, te sach
nang cua » mang cua, tang cua, lang cua
hang cua » mang cua, hang ca, huong cua
nang dua » nang du, nang suat, nang quan
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than ma » than man, than va, khan ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - anh ((((nang cua) OR (hang cua))) or (nang dua)) nhung cong tan than ma~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - anh ((((nang cua) OR (hang cua))) OR (nang dua)) nhung cong tan than ma*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sach - anh ((((nang cua) OR (hang cua))) or (nang dua)) nhung cong tan than ma*".