Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
ban thanh » ban hanh, ban hang
thi nang » thi cong, ki nang, thi hanh
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
duc ban » duc tan, duc van, dua ban
nang xa » nang x, lang xa, nang ma
lam duc » lam duoc, pham duc, nam duoc
cua te » cua tu
v nang » va nang, vu nang, van nang

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 (su sach)) v nang xa hoi. ((lieu va) or (thi nang)) lam duc ban thanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) v nang xa hoi. ((lieu va) OR (thi nang)) lam duc ban thanh dai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) v nang xa hoi. ((lieu va) or (thi nang)) lam duc ban thanh dai cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) v nang xa hoi. ((lieu va) or (thi nang)) lam duc ban thanh dai cua te*.