Perhaps you should try some spelling variations:
tinh va » tich va, trinh van, trinh vat
va tinh » may tinh
van bac » van ban, van bao, van hac
van cac » van hac, van cau, dan cac
te sach » toc sach
ty hang » ly hang, ty xang, thi hang
ty nang » ky nang, ty xang, ly nang
va cua » va chua, via cua, ca cua
cua tu » cua tuc, cua su, cua cu

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 ((ty nang) or (ty hang)) xa hoi. hieu ((van cac) OR (van bac)) nuoc va tinh va cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty nang) OR (ty hang)) xa hoi. hieu ((van cac) OR (van bac)) nuoc va tinh va cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty nang) or (ty hang)) xa hoi. hieu ((van cac) OR (van bac)) nuoc va tinh va cua tu".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty nang) or (ty hang)) xa hoi. hieu ((van cac) OR (van bac)) nuoc va tinh va cua tu*.