Perhaps you should try some spelling variations:
kxy thuat » ky thuat, ki thuat, my thuat
kmy thuat » ky thuat, my thuat, ki thuat
thuat co » thuat o
manh kxy » hanh ky, manh duy, manh xay
thuat do » thuat o
sac kmy » sac ky
tu manh » tu minh, tu hanh, vu manh
tu sac » tu sach, tu cac, tu san
do khi » doi khi, do thi, 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 sac kmy thuat co khi ) or ( tu manh kxy thuat do khi ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sac kmy thuat co khi ) OR ( tu manh kxy thuat do khi ))*.