Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh oai
thanh tai » thanh hai, thanh toan, doanh tai
vu sach » vu bach, su sach, vu khach
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
va nhan » van nhan, ca nhan, va phan
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
loc va » hoc va
luc va » duc va, tuc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty nang ma hoa. hieu va nhan ((luc va) OR (loc va)) ((thanh vai) or (thanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang ma hoa. hieu va nhan ((luc va) OR (loc va)) ((thanh vai) OR (thanh tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty nang ma hoa. hieu va nhan ((luc va) OR (loc va)) ((thanh vai) or (thanh tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang ma hoa. hieu va nhan ((luc va) OR (loc va)) ((thanh vai) or (thanh tai)) cua tre*.