Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
luoc can » luc canh, hoc can, luoc dai
duc manh » suc manh, duc anh, duc minh
nang mai » nang ma, nang tai, lang mai
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ve cac » va cac, vien cac
sac ky » cac ky, sai ky
vi cua » vai cua, di cua
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang mai hoi. hieu ve cac ((duc manh) or (((luoc can) or (hoc dan)))) hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang mai hoi. hieu ve cac ((duc manh) OR (((luoc can) OR (hoc dan)))) hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: te sac ky nang mai hoi. hieu ve cac ((duc manh) or (((luoc can) or (hoc dan)))) hanh vi cua triet*.