Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
van hanh » van thanh, ban hanh, van anh
nang tai » hang tai, tang tai, sang tai
tu sach » thu sach, su sach, te sach
tai hoi » tai khoi, dai hoi, tai hai
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
cac luc » cau luc, coc luc, cac nuoc
va hanh » va thanh, va danh, ban hanh
ve cac » va cac, vien cac
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: ((tu sach) or (thuat lanh)) ky nang tai hoi. hieu ve cac luc ((va hanh) or (van hanh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat lanh)) ky nang tai hoi. hieu ve cac luc ((va hanh) OR (van hanh)) vai cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat lanh)) ky nang tai hoi. hieu ve cac luc ((va hanh) or (van hanh)) vai cua te*.