Perhaps you should try some spelling variations:
thai cua » than cua, tai cuc, tri cua
hieu va » lieu va, hieu qua
lao loc » lao luc
va hanh » van hanh, va thanh, va danh
hai cua » dai cua, hoi cua, hai quan
lai cua » dai cua, lai chau
tu van » tu va
va lao » van lao, va dao, va bao
loc va » hoc va, luc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu van ky nang x ho. hieu va lao loc va hanh ((hai cua) or (((lai cua) OR (thai cua)))) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu van ky nang x ho. hieu va lao loc va hanh ((hai cua) OR (((lai cua) OR (thai cua)))) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu van ky nang x ho. hieu va lao loc va hanh ((hai cua) or (((lai cua) OR (thai cua)))) tre".
• Adding a wildcard symbol may retrieve word variants: tu van ky nang x ho. hieu va lao loc va hanh ((hai cua) or (((lai cua) OR (thai cua)))) tre*.