Perhaps you should try some spelling variations:
thuat cao » thuat co, thuat bao, thuat cam
trung va » truong va, trang va, trung ha
va trien » va truyen, va thiet, va tieng
va tuyen » va truyen, tac tuyen, ke tuyen
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cham » va chat, va tham
hanh tu » anh tu, danh tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat cao ky nang xa hoi. hieu va cham ((duc va) or (trung va)) hanh tu ((va trien) OR (va tuyen))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat cao ky nang xa hoi. hieu va cham ((duc va) OR (trung va)) hanh tu ((va trien) OR (va tuyen)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat cao ky nang xa hoi. hieu va cham ((duc va) or (trung va)) hanh tu ((va trien) OR (va tuyen))".
• Adding a wildcard symbol may retrieve word variants: thuat cao ky nang xa hoi. hieu va cham ((duc va) or (trung va)) hanh tu ((va trien) OR (va tuyen))*.