Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
tuc thanh » thuc thanh, duc thanh, tac thanh
thuc tap » tuc tap, thuc thai, thuc vat
cuu cong » cua cong, thu cong, cac cong
cong tuc » cong thuc, cong tac, cong suc
cong hoc » dong hoc, cong hoa, cong coc
van nhan » van phan, van thanh, danh nhan
tu cach » tu cac
mai hoi » mai khoi, dai hoi, lai hoi
nhan va » nhan tai, nhan dan, nhan tao

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

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