Perhaps you should try some spelling variations:
thuat cach » thuat sach, thuat canh, thuat mach
cach thuc » anh thuc, cac thu
thuc tap » tuc tap, thuc thai, thuc vat
cuu dong » cuu tong, cuu long, luu dong
cuu cong » cua cong, thu cong, cac cong
nha khoa » nhi khoa, da khoa, bia khoa
khoa hoc » hoa hoc
gian dan » gian lang
hoc nha » hoc ha, hoc nhanh, hoc phan
va gian » va gianh, van gian, va giai
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat cach thuc tap, nghien ((cuu dong) or (cuu cong)) hoc nha khoa hoc xa hoi va gian dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat cach thuc tap, nghien ((cuu dong) OR (cuu cong)) hoc nha khoa hoc xa hoi va gian dan.
• Adding a wildcard symbol may retrieve word variants: thuat cach thuc tap, nghien ((cuu dong) or (cuu cong)) hoc nha khoa hoc xa hoi va gian dan*.