Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
nam thau » nam thu, nam thai, nam thanh
thau xay » thuat xay, tu xay, phan xay
dung sai » dung tai, dung va, dung dat
va triet » va thiet, va trien, ve triet
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
hieu ha » hieu hoa, hieu va, hieu ca
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky sang ma hoi. hieu ha nam thau xay dung sai ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky sang ma hoi. hieu ha nam thau xay dung sai ((cua triet) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky sang ma hoi. hieu ha nam thau xay dung sai ((cua triet) or (va triet))*.