Perhaps you should try some spelling variations:
te sach » toc sach
ly nang » ky nang, ly hang, ly vang
nang ro » nang co, nang ho, nang ra
van cua » vang cua, ban cua, dan cua
va cham » va chat
sach ly » sach y, sach lo, sach ty
va tham » van tham, va thanh, va thuat
cua su » qua su
ro hoi » co hoi, o hoi, mo hoi

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 ly nang ro hoi. hieu ((va cham) OR (va tham)) doc ((va tinh) or (may tinh)) van cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang ro hoi. hieu ((va cham) OR (va tham)) doc ((va tinh) OR (may tinh)) van cua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly nang ro hoi. hieu ((va cham) OR (va tham)) doc ((va tinh) or (may tinh)) van cua su".
• Adding a wildcard symbol may retrieve word variants: te sach ly nang ro hoi. hieu ((va cham) OR (va tham)) doc ((va tinh) or (may tinh)) van cua su*.