Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
tru nang » tra nang, tri nang, truc nano
ban hanh » ban hang
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
van cau » van dau, van hau, van chat
cuc ban » cua ban, cac ban, cuu ban
vi cua » vai cua, di 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: ((tu sach) OR (thu sach)) tru nang xa hoi. thien ((van nam) or (van cau)) cuc ban hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) tru nang xa hoi. thien ((van nam) OR (van cau)) cuc ban hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) tru nang xa hoi. thien ((van nam) or (van cau)) cuc ban hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) tru nang xa hoi. thien ((van nam) or (van cau)) cuc ban hanh vi cua te*.