Perhaps you should try some spelling variations:
thuat hanh » thuat thanh, thuat hinh, thuat canh
thuat lanh » thuat lap, thuat san
nang mai » nang ma, nang tai, lang mai
minh vai » minh va, minh hai, minh ai
mai hoi » mai khoi, dai hoi, lai hoi
vai cua » dai cua, hai cua, lai cua
duc van » duc va, duc tan, duc manh
va cao » va cac, va co, va bao
va dao » ca dao
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 hanh) or (thuat lanh)) ky nang mai hoi. hieu ((va cao) or (va dao)) duc van minh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat hanh) OR (thuat lanh)) ky nang mai hoi. hieu ((va cao) OR (va dao)) duc van minh vai cua tu.
• Adding a wildcard symbol may retrieve word variants: ((thuat hanh) or (thuat lanh)) ky nang mai hoi. hieu ((va cao) or (va dao)) duc van minh vai cua tu*.