Perhaps you should try some spelling variations:
ngan khong » nganh khong, nhan khong, ngan hang
phau thong » phap thong, khau thong, phan thong
hoach tri » hoach toi, hoach hoi, hoach thu
trac bach » truc bach, tran mach
bach khoa » anh khoa
khoa phau » hoa phan, khoa kham, khoa than
sach tren » sach tien, sach tranh
khong khi » khong he
khi thong » khi phong, khi tuong, thi thuong
tri trac » thi trac, tri tac, tri thuc
te sach » toc sach
tren te » tien te, tren xe, tren he
te ngan » tu ngan, tai ngan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu hoach tri trac bach khoa phau thong ) or ( te sach tren te ngan khong khi thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu hoach tri trac bach khoa phau thong ) OR ( te sach tren te ngan khong khi thong ))*.