Perhaps you should try some spelling variations:
kki thuat » khoi thuat, mi thuat, kxy thuat
thuat bao » thuat bai, thuat giao, thuat o
thuat ho » thuat hoa, thuat o, thuat co
thuat do » thuat o
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
sach ki » sach kinh, sach bai, sach kem
bao chi » bao che
su xac » pu xac, su cac
do khi » doi khi, do thi, co khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((( su sach ky thuat ho chi ) or ( su sach ki thuat bao chi ))) or ( su xac kki thuat do khi ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( su sach ky thuat ho chi ) OR ( su sach ki thuat bao chi ))) OR ( su xac kki thuat do khi )).
• Adding a wildcard symbol may retrieve word variants: (((( su sach ky thuat ho chi ) or ( su sach ki thuat bao chi ))) or ( su xac kki thuat do khi ))*.