Perhaps you should try some spelling variations:
chieu ke » hieu ky, hieu ve, hieu kem
chau phu » chau phi, chau au, chau tho
va trien » va truyen, va thiet, va tuyen
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
hieu ke » hieu kem, hieu ky, hieu ve
la hanh » va hanh, lu hanh, ly hanh
y nang » ky nang, ly nang, v nang
phu la » phu ly
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y nang xa hoi. ((hieu ke) or (chieu ke)) chau phu la hanh vi va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang xa hoi. ((hieu ke) OR (chieu ke)) chau phu la hanh vi va trien.
• Adding a wildcard symbol may retrieve word variants: vu sach y nang xa hoi. ((hieu ke) or (chieu ke)) chau phu la hanh vi va trien*.