Perhaps you should try some spelling variations:
pham huu » pham duc, pham duy, phan huy
ban hanh » ban hang
va trien » va truyen, va thiet, va tuyen
su sach » so sach, vu sach
vu khac » vu kham, vu khanh, bui khac
lang xa » lang ha, dang xay, lang van
hieu su » hieu sau, tieu su, hieu so
su pham » san pham
v lang » va lang, o lang, _ lang
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: ((su sach) or (vu khac)) v lang xa hoi. hieu su pham huu ((van ban) or (ban hanh)) vi va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu khac)) v lang xa hoi. hieu su pham huu ((van ban) OR (ban hanh)) vi va trien.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu khac)) v lang xa hoi. hieu su pham huu ((van ban) or (ban hanh)) vi va trien*.