Perhaps you should try some spelling variations:
xanh hanh » danh thanh, ban hanh, van hanh
van pham » san pham, van phan, van tham
van phat » va phat, van chat, van phan
duy xanh » duy anh, duy ranh, duy khanh
hanh lai » hanh lam, hanh tai, thanh lap
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
ca viet » va viet, hoa viet, san viet
co viet » so viet, o viet, hoc viet
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 pham) or (van phat)) duy xanh hanh lai ((ca viet) OR (co viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. hieu ((van pham) OR (van phat)) duy xanh hanh lai ((ca viet) OR (co viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang x hoi. hieu ((van pham) or (van phat)) duy xanh hanh lai ((ca viet) OR (co viet))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. hieu ((van pham) or (van phat)) duy xanh hanh lai ((ca viet) OR (co viet))*.