Perhaps you should try some spelling variations:
tham luc » tham nuoc, tham thuc, nhan luc
than luc » nhan luc, than duc, thanh luu
danh di » danh du, xanh di, danh dien
va danh » va dinh, va dan, va hanh
te sach » toc sach
hieu va » lieu va, hieu qua
ty hang » ly hang, ty xang, thi hang
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de cua

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