Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
tai cau » tai cac, tai cao
han tai » hang tai, nhan tai, van tai
te sach » toc sach
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ky nang, ty hang, ly nang
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
xuc va » tuc va, luc va, xac va

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