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
nang xa » lang xa, nang ma, mang xa
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
cua tu » cua tuc, cua su, cua cu

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 xa) or (nang x)) hoi. lieu va cam duc van hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (thuat lanh)) y ((nang xa) OR (nang x)) hoi. lieu va cam duc van hanh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (thuat lanh)) y ((nang xa) or (nang x)) hoi. lieu va cam duc van hanh vi cua tu*.