Perhaps you should try some spelling variations:
van chat » cao chat
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
ve cham » va cham, ve chat, vu cham
va phan » van phan, va phat, va phap
y nang » ky nang, ly nang, v nang
va han » van han, va hanh, va hang
mac va » mac ca, tac va, ac va
thiet » thieu

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