Perhaps you should try some spelling variations:
pham duy » pham duc
dang hai » dang khai, hang hai, dung hai
danh hai » lanh hai, manh hai, danh hau
duy ban » uy ban, duy van, duy can
va pham » van pham, va phat, va phap
sach ky » sach y, sach ty, sach kem
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky

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 ky) or (sac ky)) lang xa hoi. hieu va pham duy ban ((danh hai) or (dang hai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) lang xa hoi. hieu va pham duy ban ((danh hai) OR (dang hai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) lang xa hoi. hieu va pham duy ban ((danh hai) or (dang hai)) cua tre*.