Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
va trien » va truyen, va thiet, va tuyen
thanh va » hanh va, thanh ha, thanh ve
chau cau » chau cay, nhu cau, mau cau
nang xa » nang x, lang xa, nang ma
hieu ke » hieu kem, chieu ke, hieu ky
bach y » sach y
y nang » ky nang, ly nang, v nang

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