Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
tham luc » than luc, tham nuoc, nhan luc
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va hanh » van hanh, va thanh, va danh
cua te » cua tu

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 ky lang xa hoi. lieu va ((tham luc) or (tham thuc)) va hanh vi ((cau tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. lieu va ((tham luc) OR (tham thuc)) va hanh vi ((cau tren) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. lieu va ((tham luc) or (tham thuc)) va hanh vi ((cau tren) or (cua te))*.