Perhaps you should try some spelling variations:
bach thuoc » bach tuoc, cach thuc, ban thuoc
hieu van » hieu va, thien van, lieu va
van bach » van bac, van hach, van sach
thuoc va » thuc va, thuoc ma, thuong va
phan lap » phan dau
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
va phan » van phan, va phat, va phap
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu van bach thuoc va phan lap ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang x hoi. hieu van bach thuoc va phan lap ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. hieu van bach thuoc va phan lap ((cua tre) OR (cuu tre))*.