Perhaps you should try some spelling variations:
kxy thuat » ky thuat, ki thuat, my thuat
kva thuat » va thuat, ky thuat, ki thuat
thuat bao » thuat bai, thuat giao, thuat do
sach kxy » sach xa, sach kem, sac ky
tu sach » thu sach, te sach, tu cach
y thuat » ky thuat, my thuat, ki thuat
thuat o » thuat do
su sach » so sach, vu sach
bao chi » bao che
tu sac » tu cac, tu san, tu bac
o khi » co khi, bo khi

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 y thuat o khi ) or ((( su sach kxy thuat o khi ) or ( tu sac kva thuat bao chi ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach y thuat o khi ) OR ((( su sach kxy thuat o khi ) OR ( tu sac kva thuat bao chi )))).
• Adding a wildcard symbol may retrieve word variants: (( tu sach y thuat o khi ) or ((( su sach kxy thuat o khi ) or ( tu sac kva thuat bao chi ))))*.