Perhaps you should try some spelling variations:
chat viet » cham viet, nhat viet, chuan viet
lam chat » luan chat, cao chat, ly chat
hanh lam » thanh lap, hanh kem, hanh va
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
cuu va » cuu van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sanh) or (do sanh)) ty nang xa hoi. hieu ve pham ((cuu va) OR (cuu ve)) hanh lam chat viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sanh) OR (do sanh)) ty nang xa hoi. hieu ve pham ((cuu va) OR (cuu ve)) hanh lam chat viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sanh) or (do sanh)) ty nang xa hoi. hieu ve pham ((cuu va) OR (cuu ve)) hanh lam chat viet".
• Adding a wildcard symbol may retrieve word variants: ((so sanh) or (do sanh)) ty nang xa hoi. hieu ve pham ((cuu va) OR (cuu ve)) hanh lam chat viet*.