Perhaps you should try some spelling variations:
khoa thong » hoa thong, thoai thong, pho thong
phan thong » phan thuong, phan hong, phan tong
cach thuc » anh thuc, cac thu
thuc tiep » thuc tien, truc tiep, thuc hien
sach tren » sach tien, sach tranh
tren vung » tren duong, ben vung, tren mang
vung dung » vuong dung, ung dung, vung dong
tiep bac » tien bac, tiep bai, tiep can
dung hoa » dung khoa, duong hoa, dung hoai
hoa khoa » khoa khoa, chua khoa, chia khoa
tu cach » tu cac
ha phan » hoa phan, hai phan, va phan
so sach » so sanh, bo sach, co sach

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 tiep bac ha phan thong ) or ( so sach tren vung dung hoa khoa thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cach thuc tiep bac ha phan thong ) OR ( so sach tren vung dung hoa khoa thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu cach thuc tiep bac ha phan thong ) or ( so sach tren vung dung hoa khoa thong ))*.