Perhaps you should try some spelling variations:
cac thanh » bac thanh, cach nhanh, ban thanh
thuat san » thuat toan, thuat song, thuat lanh
ngan hay » ngan han, nganh xay, ngan nhat
thua hoa » thuat hoa, thuy hoa, chuan hoa
thanh ky » hanh ky, than ky, thanh tay
te sach » toc sach
thu cac » tu cac, thu xac, thu cuc
san hoc » van hoc, dan hoc, san ho

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 ((ngan hay) OR (ngan hang)) thua hoa hoc ) or ( thu cac thanh ky thuat san hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach ((ngan hay) OR (ngan hang)) thua hoa hoc ) OR ( thu cac thanh ky thuat san hoc )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( te sach ((ngan hay) OR (ngan hang)) thua hoa hoc ) or ( thu cac thanh ky thuat san hoc ))".
• Adding a wildcard symbol may retrieve word variants: (( te sach ((ngan hay) OR (ngan hang)) thua hoa hoc ) or ( thu cac thanh ky thuat san hoc ))*.