Perhaps you should try some spelling variations:
nang pho » nang ho, lang pho, nang cho
hieu van » hieu va, thien van, lieu va
hang tai » hang va, dung tai
tu sach » thu sach, su sach, te sach
pho hai » pho ha
van cac » van hac, van cau, van bac
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cuu tre, cua triet, dua tren
y nang » ky nang, ly nang, v nang
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 y nang pho hai. hieu van cac ((xuc ban) or (duc va)) hang tai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang pho hai. hieu van cac ((xuc ban) OR (duc va)) hang tai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang pho hai. hieu van cac ((xuc ban) or (duc va)) hang tai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang pho hai. hieu van cac ((xuc ban) or (duc va)) hang tai ((cua tre) OR (cua te))*.