Perhaps you should try some spelling variations:
van tham » van thanh, van tuan, van thu
van chat » cao chat
te sach » toc sach
nang xa » nang x, lang xa, nang ma
han tai » hang tai, nhan tai, toan tai
van tai » von tai, van tuan
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc 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: te sach y nang xa hoi. hieu ((van tham) or (van chat)) xuc va ((han tai) OR (van tai)) va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. hieu ((van tham) OR (van chat)) xuc va ((han tai) OR (van tai)) va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang xa hoi. hieu ((van tham) or (van chat)) xuc va ((han tai) OR (van tai)) va thiet".
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. hieu ((van tham) or (van chat)) xuc va ((han tai) OR (van tai)) va thiet*.