Perhaps you should try some spelling variations:
van chao » van hao, van cho, van khao
van chat » cao chat
han thai » han tai, ban thai, van thai
va thieu » va thiet, va hieu, va tieu
nang xa » nang x, lang xa, nang ma
van han » van hanh, van phan, van nhan
thai va » thai van
xu van » tu van, vu van, su van

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 y) or (cac ky)) nang xa hoi. hieu ((van chao) OR (van chat)) xu van han thai va thieu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach y) OR (cac ky)) nang xa hoi. hieu ((van chao) OR (van chat)) xu van han thai va thieu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach y) or (cac ky)) nang xa hoi. hieu ((van chao) OR (van chat)) xu van han thai va thieu".
• Adding a wildcard symbol may retrieve word variants: su ((sach y) or (cac ky)) nang xa hoi. hieu ((van chao) OR (van chat)) xu van han thai va thieu*.