Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, le thanh
va trien » va truyen, va thiet, va tuyen
nang xa » nang x, lang xa, nang ma
hieu ke » hieu kem, chieu ke, hieu ky
va tinh » may tinh
bach y » sach y
y nang » ky nang, ly nang, v nang
va va » va van, va vua, va vai

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu bach y nang xa hoi. hieu ke ((nhu cau) or (chau au)) ((va thanh) OR (va tinh)) va va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach y nang xa hoi. hieu ke ((nhu cau) OR (chau au)) ((va thanh) OR (va tinh)) va va trien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu bach y nang xa hoi. hieu ke ((nhu cau) or (chau au)) ((va thanh) OR (va tinh)) va va trien".
• Adding a wildcard symbol may retrieve word variants: vu bach y nang xa hoi. hieu ke ((nhu cau) or (chau au)) ((va thanh) OR (va tinh)) va va trien*.