Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
tu sach » thu sach, te sach, tu cach
va dinh » van dinh, va kinh, va tinh
va danh » va dan, va hanh, dia danh
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
cuc tre » duc tre, cua tre, cuu tre
y nang » ky nang, ly nang, v nang

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) OR (su sach)) y nang xa hoi. hieu ve cham tuc ((va danh) or (va dinh)) tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) y nang xa hoi. hieu ve cham tuc ((va danh) OR (va dinh)) tai cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) y nang xa hoi. hieu ve cham tuc ((va danh) or (va dinh)) tai cuc tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) y nang xa hoi. hieu ve cham tuc ((va danh) or (va dinh)) tai cuc tre*.