Perhaps you should try some spelling variations:
thuat babo » thuat bao, thuat bai, thuat ban
kmy thuat » my thuat, kxy thuat, ki thuat
babo chi » bao chi, bao che, banh chi
su sach » so sach, vu sach
sach ky » sac ky, sach ty, sach kem
y thuat » my thuat, kxy thuat, ki thuat
su xac » pu xac, su cac
do khi » doi khi, do thi, co khi
o chi » ho chi, bo chi, _ chi

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 o chi ) or ( su sach y thuat babo chi ))) or ( su xac kmy thuat do khi ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( su sach ky thuat o chi ) OR ( su sach y thuat babo chi ))) OR ( su xac kmy thuat do khi )).
• Adding a wildcard symbol may retrieve word variants: (((( su sach ky thuat o chi ) or ( su sach y thuat babo chi ))) or ( su xac kmy thuat do khi ))*.