Perhaps you should try some spelling variations:
nang tai » hang tai, tang tai, sang tai
tai khoa » da khoa, noi khoa
nang van » dang van, tang van, lang van
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
hieu va » lieu va, hieu qua
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
van cua » vang cua, ban cua, dan 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: te sach tu nang tai khoa. hieu va cam ((xuc van) or (duc van)) nang van cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nang tai khoa. hieu va cam ((xuc van) OR (duc van)) nang van cua tu.
• Adding a wildcard symbol may retrieve word variants: te sach tu nang tai khoa. hieu va cam ((xuc van) or (duc van)) nang van cua tu*.