Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cau tren » cu tren, dau tren, ca tren
hieu cua » hieu qua, dieu cua, bieu cua
cac truc » cau truc, cac tru, cac trung
nang ma » tang ma, sang ma, nang cao
truc va » thuc va, thuc vat, trung va
va danh » va dinh, va dan, va hanh
danh ca » dan ca, doanh cua, danh cho
ma hoi » mai hoi, xa hoi, ma hoa
tu san » thu san, tu ban, tu can
tu sac » tu sach, tu cac, tu bac

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) OR (tu san)) ky nang ma hoi. hieu cua cac truc va danh ca ((cua triet) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky nang ma hoi. hieu cua cac truc va danh ca ((cua triet) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) OR (tu san)) ky nang ma hoi. hieu cua cac truc va danh ca ((cua triet) or (cau tren))".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) OR (tu san)) ky nang ma hoi. hieu cua cac truc va danh ca ((cua triet) or (cau tren))*.