Perhaps you should try some spelling variations:
phap thong » phap phong, phap chong, pho thong
thuc tiep » thuc tien, truc tiep, thuc hien
tan thong » toan thong, tran thong, tao thong
thuc cach » thuoc sach, truoc cach, thuc hanh
cach khoa » bach khoa, cac khoa, cac khoan
khoa phap » khoa phau, khoan phai, khong phap
anh thuc » am thuc, dan thuc, anh tu
sach thu » sach thue, sach thieu, sach tham
thu thuc » thuc thuc, thu thuoc, thue thuc
can hoa » van hoa, cau hoa, cam hoa
hoa tan » hoa dan, hoa van, hoa tin
tu sach » thu sach, su sach, te sach
tu anh » tu hanh, tu manh, thu anh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu anh thuc tiep can hoa tan thong ) or ( tu sach thu thuc cach khoa phap thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu anh thuc tiep can hoa tan thong ) OR ( tu sach thu thuc cach khoa phap thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu anh thuc tiep can hoa tan thong ) or ( tu sach thu thuc cach khoa phap thong ))*.