Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
vai cua » dai cua, hai cua, lai cua
cuc ban » cua ban, cac ban, cuu ban
tu sach » thu sach, su sach, te sach
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
ve cac » va cac, vien cac
ve cam » ve cham, va cam, 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) or (thu hoach)) ky tang xa hoi. hieu ((ve cam) or (ve cac)) cuc ban hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu hoach)) ky tang xa hoi. hieu ((ve cam) OR (ve cac)) cuc ban hanh vai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu hoach)) ky tang xa hoi. hieu ((ve cam) or (ve cac)) cuc ban hanh vai cua triet*.