Perhaps you should try some spelling variations:
chanh tranh » canh tranh, hanh trinh, nhanh thanh
sach trinh » sach tranh, hanh trinh, sach kinh
tranh thai » trang thai, tran thi, tinh thai
thai dien » thai den, thau dien, thuat dien
tu chanh » tu hanh, tu thanh, tu chung
dien hoc » dien hoa, khien hoc, tin hoc
te sach » toc sach
nghe vi » nghe va, nghe noi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te sach trinh ((nghe vi) or (nghe dan)) hoc ) or ( tu chanh tranh thai dien hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach trinh ((nghe vi) OR (nghe dan)) hoc ) OR ( tu chanh tranh thai dien hoc )).
• Adding a wildcard symbol may retrieve word variants: (( te sach trinh ((nghe vi) or (nghe dan)) hoc ) or ( tu chanh tranh thai dien hoc ))*.