Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, hieu ve
thu sai » thu hai, thu san, thu ai
thu tai » tu tai, tru tai, thu hai
nang xa » nang x, lang xa, nang ma
dau xua » dau cua, dao xuan, dau luan
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
xua va » xuat va, vua va, sua va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sai) OR (thu tai)) ky nang xa hoi. ((hieu van) or (lieu va)) dau xua va danh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sai) OR (thu tai)) ky nang xa hoi. ((hieu van) OR (lieu va)) dau xua va danh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sai) OR (thu tai)) ky nang xa hoi. ((hieu van) or (lieu va)) dau xua va danh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sai) OR (thu tai)) ky nang xa hoi. ((hieu van) or (lieu va)) dau xua va danh vi cua tre*.