Perhaps you should try some spelling variations:
cau theo » cau thi, cau tao
tra nang » thi nang, kha nang, da nang
van hanh » van thanh, ban hanh, van anh
van cam » van lam, van cau, van dam
xuc van » duc van, luc van, vuc van
cu lang » cua lang, tu lang, xu lang
hanh ve » hanh vi, hanh va, hanh kem
te sach » toc sach
ve cau » ke cau, va cau, ve cac

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 ((cu lang) or (tra nang)) xa hoi. hieu ((van cam) or (van nam)) xuc van hanh ve cau theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((cu lang) OR (tra nang)) xa hoi. hieu ((van cam) OR (van nam)) xuc van hanh ve cau theo.
• Adding a wildcard symbol may retrieve word variants: te sach ((cu lang) or (tra nang)) xa hoi. hieu ((van cam) or (van nam)) xuc van hanh ve cau theo*.