Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
thu thanh » thu thang, tu thanh, thuan thanh
va triet » va thiet, va trien, ve triet
thu hanh » thuc hanh, thuy hanh, thi hanh
va thanh » gia thanh, ban thanh, va tinh
truc va » thuc va, thuc vat, trung va
tu sach » thu sach, su sach, te sach
va cam » va cham, va cac, va cao
lap va » tap va
ve cam » ve cham, ve cac, ve cai

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 (thu thanh)) xa hoi. hieu ((ve cam) or (va cam)) truc va thanh lap va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thu hanh) OR (thu thanh)) xa hoi. hieu ((ve cam) OR (va cam)) truc va thanh lap va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((thu hanh) OR (thu thanh)) xa hoi. hieu ((ve cam) or (va cam)) truc va thanh lap va triet*".