Perhaps you should try some spelling variations:
loai pham » loai nam, toi pham, hai pham
sang tao » hang tai
voi pham » vi pham, toi pham, v pham
tinh lap » trinh lap, tinh lao, dinh lap
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
tao hoi » tao khoi, tao boi, tay hoi
va tinh » may tinh
cua tu » cua tuc, cua su, cua cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky sang tao hoi. hieu ((voi pham) OR (loai pham)) duc va tinh lap ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky sang tao hoi. hieu ((voi pham) OR (loai pham)) duc va tinh lap ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky sang tao hoi. hieu ((voi pham) OR (loai pham)) duc va tinh lap ((cua te) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: te sach ky sang tao hoi. hieu ((voi pham) OR (loai pham)) duc va tinh lap ((cua te) or (cua tu))*.