Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh tai » thanh tai, hang tai, han tai
kho tang » cao tang
va hanh » van hanh, va thanh, va danh
cam luc » cau luc
te sach » toc sach
ky lang » ky nang, ky dang, ky tang
van hoe » van hoa, van hoc, van hieu
tai su » tai so, tai tu, lai su

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) or (kho tang)) van hoe. lieu va ((cam luc) or (cam xuc)) va hanh tai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky lang) OR (kho tang)) van hoe. lieu va ((cam luc) OR (cam xuc)) va hanh tai su triet.
• Adding a wildcard symbol may retrieve word variants: te sach ((ky lang) or (kho tang)) van hoe. lieu va ((cam luc) or (cam xuc)) va hanh tai su triet*.