Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thuy hanh » thuc hanh, thuy anh, thuy canh
thu hanh » thuc hanh, thu thanh, thi hanh
hanh tai » thanh tai, hang tai, han tai
dan hanh » dang hanh, dan khanh, dan thanh
thuc dan » thuc hanh, hoc dan, thuc vat
tai cua » thai cua, tai cuc, tri cua
tu sach » thu sach, su sach, te sach
va nam » van nam, ha nam, va nay
ve nam » he nam, le nam, te nam
xu hoi » xa hoi, lu hoi, vu hoi

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 ((thu hanh) OR (thuy hanh)) xu hoi. hieu ((ve nam) or (va nam)) thuc dan hanh tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thu hanh) OR (thuy hanh)) xu hoi. hieu ((ve nam) OR (va nam)) thuc dan hanh tai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((thu hanh) OR (thuy hanh)) xu hoi. hieu ((ve nam) or (va nam)) thuc dan hanh tai cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((thu hanh) OR (thuy hanh)) xu hoi. hieu ((ve nam) or (va nam)) thuc dan hanh tai cua triet*.