Perhaps you should try some spelling variations:
thuat bao » thuat bai, thuat giao, thuat o
kxy thuat » ky thuat, ki thuat, ky thua
kem thuat » kiem thuat, ky thuat, ki thuat
my thuat » ky thuat, ki thuat, va thuat
thuat do » thuat o
thuat bo » thuat o, thuat co, thuat so
sach kem » hanh kem
sach kxy » sach xa, sac ky, sach y
tu sach » thu sach, tu cach, vu sach
bao khi » bao chi, ban khi, bao kha
te sach » toc sach
sach my » sach y, sach ty, sach mau
su sach » so sach, vu sach
do khi » doi khi, do thi, co khi
bo chi » bao chi, ho chi, bo cai

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