Perhaps you should try some spelling variations:
trinh nghien » trinh nghe, kinh nghiem, trinh thiet
hanh trinh » canh tranh, hanh chinh
trang thai » trang trai, trong thai, trang tai
nghien li » nguyen li, nghiem vi, nghiep ly
trang thi » tran thi, trang tri, trong thi
thu hanh » thuc hanh, thu thanh, thuy hanh
dich hoc » sinh hoc, hinh hoc, tinh hoc
tu banh » tu ban, tu hanh, tu manh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu hanh trinh nghien li hoc ) or ( tu banh ((trang thi) OR (trang thai)) dich hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu hanh trinh nghien li hoc ) OR ( tu banh ((trang thi) OR (trang thai)) dich hoc )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( thu hanh trinh nghien li hoc ) or ( tu banh ((trang thi) OR (trang thai)) dich hoc ))".
• Adding a wildcard symbol may retrieve word variants: (( thu hanh trinh nghien li hoc ) or ( tu banh ((trang thi) OR (trang thai)) dich hoc ))*.