Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
thanh dai » thanh tai, thanh dat, thanh oai
nang cac » nang cao, bang cac, hang cac
cac khoi » cac thoi, cac khoan, cach thoi
tu sach » thu sach, su sach, te sach
va cham » va chat, va tham
sach ky » sac ky, sach y, sach ty
luc va » duc va, tuc va, loc va
va cam » va cac, va cao, va cai
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 ky nang cac khoi. hieu ((va cam) OR (va cham)) luc va ((thanh dai) or (thanh hai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang cac khoi. hieu ((va cam) OR (va cham)) luc va ((thanh dai) OR (thanh hai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang cac khoi. hieu ((va cam) OR (va cham)) luc va ((thanh dai) or (thanh hai)) cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang cac khoi. hieu ((va cam) OR (va cham)) luc va ((thanh dai) or (thanh hai)) cua te*.