Perhaps you should try some spelling variations:
may nang » may nong, ky nang, cam nang
hang hai » hoang hai, hang tai, thanh hai
te sach » toc sach
va hang » van hang, va nang, va lang
cam duc » cam xuc, cao duc, pham duc
hieu va » lieu va, hieu qua
cao hoi » cau hoi, co hoi, cao hoc
cua tuc » cua duc, cua thuoc, luat tuc
va cam » va cham, va cac, va cao
v nang » va nang, vu nang, van nang
cua tu » cua su, cua cu, cua te

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 ((may nang) or (v nang)) cao hoi. hieu va cam duc va hang hai ((cua tu) OR (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((may nang) OR (v nang)) cao hoi. hieu va cam duc va hang hai ((cua tu) OR (cua tuc))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((may nang) or (v nang)) cao hoi. hieu va cam duc va hang hai ((cua tu) OR (cua tuc))*".