Perhaps you should try some spelling variations:
ban hanh » ban hang
hanh di » hanh vi, hanh de, hang di
xua ban » xuat ban, cua ban, qua ban
nam xua » nam cua, nam mua, nam qua
hieu va » lieu va, hieu qua
te sach » toc sach
tu nong » tu cong, tu tong, tu tuong
tu nang » tru nang, tu nano, tu lang
va nam » van nam, ha nam, va nay
di cua » dai cua, doi cua, de cua
cua te » cua tu

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 ((tu nang) or (((tu nong) OR (tu dong)))) xa hoi. hieu va nam xua ban hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tu nang) OR (((tu nong) OR (tu dong)))) xa hoi. hieu va nam xua ban hanh di cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((tu nang) or (((tu nong) OR (tu dong)))) xa hoi. hieu va nam xua ban hanh di cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ((tu nang) or (((tu nong) OR (tu dong)))) xa hoi. hieu va nam xua ban hanh di cua te*.