Perhaps you should try some spelling variations:
nang cau » nang cao, hang cau, nang dau
truc van » truc va, thuc van, truc ban
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
van han » van hanh, van phan, van nhan
tai cua » thai cua, tri cua, dai cua
va cau » van cau, va cac, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang cau hoi. lieu va cau truc van han ((tai cua) or (tai cuc)) tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang cau hoi. lieu va cau truc van han ((tai cua) OR (tai cuc)) tuc.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang cau hoi. lieu va cau truc van han ((tai cua) or (tai cuc)) tuc*.