Perhaps you should try some spelling variations:
nang dai » nang dau, nang tai, lang dai
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
va cham » va chat, va tham
xuc van » duc van, luc van, vuc van
dai hoi » dai hoc, dai hai, dai moi
sinh y » sinh ly
y nang » ky nang, ly nang, v nang
va cam » va cac, va cao, va cai
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: hoc sinh y nang dai hoi. lieu ((va cam) OR (va cham)) xuc van hanh tai ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sinh y nang dai hoi. lieu ((va cam) OR (va cham)) xuc van hanh tai ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sinh y nang dai hoi. lieu ((va cam) OR (va cham)) xuc van hanh tai ((cua te) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: hoc sinh y nang dai hoi. lieu ((va cam) OR (va cham)) xuc van hanh tai ((cua te) or (cua tu))*.