Perhaps you should try some spelling variations:
thuat sach » thuat san
thuat lanh » thuat lap, thuat san
van hanh » van thanh, ban hanh, van anh
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
vi cua » vai cua, di cua
va cam » va cham, va cac, va cao
v nang » va nang, vu nang, van nang
y nang » ky nang, ly nang, may nang
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: ((thuat sach) or (thuat lanh)) ((y nang) OR (v nang)) xa hoi. lieu va cam duc van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (thuat lanh)) ((y nang) OR (v nang)) xa hoi. lieu va cam duc van hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) or (thuat lanh)) ((y nang) OR (v nang)) xa hoi. lieu va cam duc van hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (thuat lanh)) ((y nang) OR (v nang)) xa hoi. lieu va cam duc van hanh vi cua te*.