Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
pham huu » pham duc, pham duy, phan huy
han hanh » ban hanh, van hanh, han danh
so sanh » do sanh
cua tuc » cua duc, cua tu, cua thuoc
nang o » nang co, nang ho, nang ro
vi cua » vai cua, di cua
o lai » o lao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cac) or (so sanh)) ky nang o lai. hieu van ((chat huu) OR (pham huu)) han hanh vi cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (so sanh)) ky nang o lai. hieu van ((chat huu) OR (pham huu)) han hanh vi cua tuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cac) or (so sanh)) ky nang o lai. hieu van ((chat huu) OR (pham huu)) han hanh vi cua tuc".
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (so sanh)) ky nang o lai. hieu van ((chat huu) OR (pham huu)) han hanh vi cua tuc*.