Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
nam thuc » nam thuoc, am thuc, nam thu
hieu van » hieu va, thien van, lieu va
thi hanh » thi thanh
hanh xu » hanh tu, hanh sua, hanh cua
nam luc » nang luc, nhan luc, nam duoc
va hanh » van hanh, va thanh, va danh
te sach » toc sach
tu sach » thu sach, su sach, tu cach
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) or (te sach)) thi hanh xu hoi. hieu van ((nam luc) OR (nam thuc)) va hanh thai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) thi hanh xu hoi. hieu van ((nam luc) OR (nam thuc)) va hanh thai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) thi hanh xu hoi. hieu van ((nam luc) OR (nam thuc)) va hanh thai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) thi hanh xu hoi. hieu van ((nam luc) OR (nam thuc)) va hanh thai cua triet*.