Perhaps you should try some spelling variations:
thuat sach » thuat san
thuat lanh » thuat lap, thuat san
mky thuat » ky thuat, my thuat, ki thuat
thuat co » thuat do, thuat o
thuat di » thuat dia, thuat doi, thuat do
tu sach » thu sach, su sach, te sach
y thuat » ky thuat, my thuat, kxy thuat
di khi » doi khi, li khi, di chi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((thuat sach) or (thuat lanh)) mky thuat co khi ) or ( tu sach y thuat di khi ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((thuat sach) OR (thuat lanh)) mky thuat co khi ) OR ( tu sach y thuat di khi )).
• Adding a wildcard symbol may retrieve word variants: (( ((thuat sach) or (thuat lanh)) mky thuat co khi ) or ( tu sach y thuat di khi ))*.