Perhaps you should try some spelling variations:
thanh va » thanh van, hanh va, thanh ha
thu sach » thuat sach, thuoc sach, thu hoach
thu nang » thi nang, thu hang, thu bang
va thanh » gia thanh, ban thanh, va tinh
tu sach » su sach, te sach, tu cach
ve cam » ve cham, ve cac, va cam
va cua » va chua, via cua, ca cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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)) thu nang x hoi. hieu ((ve cam) or (va cac)) duc va thanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) thu nang x hoi. hieu ((ve cam) OR (va cac)) duc va thanh va cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) thu nang x hoi. hieu ((ve cam) or (va cac)) duc va thanh va cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) thu nang x hoi. hieu ((ve cam) or (va cac)) duc va thanh va cua te*.