Perhaps you should try some spelling variations:
trinh nghien » trinh nghe, kinh nghiem, trinh thiet
sach thuat » sach tham, dich thuat, cac thuat
thuat ghep » thuat cheo, thuat giup, thuat che
nghien van » nghiem van, nghiep van, nguyen van
thuat san » thuat toan, thuat song, thuat lanh
san trinh » dan trinh, san tinh, van trinh
ghep dai » nghiep dai, ghep noi, he dai
tu sach » thu sach, su sach, te sach
hoa » khoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach thuat ghep dai hoc ) or ( thuat san trinh nghien van hoa ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach thuat ghep dai hoc ) OR ( thuat san trinh nghien van hoa )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach thuat ghep dai hoc ) or ( thuat san trinh nghien van hoa ))*.