Perhaps you should try some spelling variations:
thai cua » than cua, tai cuc, tri cua
van hanh » van thanh, ban hanh, van anh
tai cua » tai cuc, tri cua, dai cua
hoc cac » hoc cao
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
hieu va » lieu va, hieu qua
cao luc » bao luc, cao duc, cao suc
luc van » luoc van, luu van, duc van
va cao » va cac, va co, va dao
ha hoi » hoa hoi, ha noi, xa hoi

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) or (hoc cac)) ky lang ha hoi. hieu va cao luc van hanh ((tai cua) OR (thai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sinh) OR (hoc cac)) ky lang ha hoi. hieu va cao luc van hanh ((tai cua) OR (thai cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sinh) or (hoc cac)) ky lang ha hoi. hieu va cao luc van hanh ((tai cua) OR (thai cua)) tre*".