Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
te sach » toc sach
van van » van ban, san van, van vat
ty nang » ky nang, ty xang, ty hang
mai hoi » mai khoi, dai hoi, lai hoi
sach ty » sach y, sach tu, sach thu
tan van » tran van, tang van, luan van
cua su » qua su
ve cac » vien cac

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 ty nang mai hoi. hieu ((ve cac) or (va cac)) xuc ((van van) OR (tan van)) dai cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang mai hoi. hieu ((ve cac) OR (va cac)) xuc ((van van) OR (tan van)) dai cua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang mai hoi. hieu ((ve cac) or (va cac)) xuc ((van van) OR (tan van)) dai cua su".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang mai hoi. hieu ((ve cac) or (va cac)) xuc ((van van) OR (tan van)) dai cua su*.