Perhaps you should try some spelling variations:
tinh van » trinh van, dinh van, tinh va
tu sach » thu sach, su sach, te sach
va tinh » may tinh
chu tre » chu tri, cuu tre, cau tren
nang xa » nang x, lang xa, nang ma
cho tre » cho thue, khoe tre
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
va cam » va cham, va cao, va cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang xa hoi. hieu ((va cam) OR (va cac)) xuc va tinh van ((chu tre) or (cho tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ((va cam) OR (va cac)) xuc va tinh van ((chu tre) OR (cho tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu ((va cam) OR (va cac)) xuc va tinh van ((chu tre) or (cho tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ((va cam) OR (va cac)) xuc va tinh van ((chu tre) or (cho tre))*.