Perhaps you should try some spelling variations:
pham thuc » phap thuc, nham thuc, pham thu
pham chuc » pham duc, pham huu, kham chua
day danh » day manh, dai danh, dao danh
su sach » so sach
danh te » danh tu, danh het, danh yen
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
vu sach » vu bach, vu khach
te cua » tue cua, le cua, de cua
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ty nang xa hoi. hieu ve ((pham thuc) OR (pham chuc)) day danh te cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ty nang xa hoi. hieu ve ((pham thuc) OR (pham chuc)) day danh te cua te~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ty nang xa hoi. hieu ve ((pham thuc) OR (pham chuc)) day danh te cua te*.