Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
chi sach » chinh sach, chieu sach, co sach
thang ap » tang ap, thang ay, thanh lap
cong tan » cong tac, cong san, cong thanh
doi chi » doi khi
ap dung » xay dung, van dung
can cau » van cau, ban cau, ca cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi sach - thanh thang ap dung ((cong dong) or (cong tan)) can cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sach - thanh thang ap dung ((cong dong) OR (cong tan)) can cau.
• Adding a wildcard symbol may retrieve word variants: doi chi sach - thanh thang ap dung ((cong dong) or (cong tan)) can cau*.