Perhaps you should try some spelling variations:
qua tham » qua cham, qua than, qua thanh
tham luc » than luc, tham nuoc, tham thuc
te sach » toc sach
ty hang » ly hang, ty xang, thi hang
va danh » va dinh, va dan, va hanh
danh de » hanh de, dan de, dang de
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va
de cua » le cua, te cua, dieu 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 qua tham luc va danh de 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 qua tham luc va danh de cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((ty hang) or (ky nang)) xa hoi. hieu qua tham luc va danh de cua tre*.