Perhaps you should try some spelling variations:
thieu nien » thien nhien
tu sach » thu sach, su sach, te sach
va nang » van nang, da nang, kha nang
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
cac toc » cac nuoc, cac thoi
sach ty » sach y, sach tu, sach thu
cac toi » cac thoi
vi cua » vai cua, di cua
cua cu » cua chu, cua cau, cua su

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 ty nang ma hoa. thieu nien ((cac toc) or (cac toi)) ((va nang) or (cam nang)) vi cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ma hoa. thieu nien ((cac toc) OR (cac toi)) ((va nang) OR (cam nang)) vi cua cu.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ma hoa. thieu nien ((cac toc) or (cac toi)) ((va nang) or (cam nang)) vi cua cu*.