Perhaps you should try some spelling variations:
cao tuc » dao tuc, cao duc, cao suc
thu san » thuy san, thu ban, phu san
va hanh » van hanh, va thanh, ban hanh
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, dia danh
tu san » tu ban, tu can, vu san
vi cua » vai cua, di cua
va cao » va cac, va co, va dao
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu san) OR (thu san)) ky nang ma hoi. hieu va cao tuc ((va danh) or (va hanh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (thu san)) ky nang ma hoi. hieu va cao tuc ((va danh) OR (va hanh)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu san) OR (thu san)) ky nang ma hoi. hieu va cao tuc ((va danh) or (va hanh)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu san) OR (thu san)) ky nang ma hoi. hieu va cao tuc ((va danh) or (va hanh)) vi cua te*.