Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
tinh vai » tinh va, tinh hai, tinh bai
dan tinh » doan tinh, dang tinh, dan trinh
thuc dan » thuc hanh, hoc dan, thuc vat
cau thuc » cau truc, cuu thuc, can thuc
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
ly nang » ky nang, ly hang, ly vang
hieu ve » hieu van
cua te » cua tu
y nang » ky nang, v nang, may nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat san ((y nang) OR (ly nang)) xa hoi. ((hieu ve) or (hieu va)) cau thuc dan tinh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat san ((y nang) OR (ly nang)) xa hoi. ((hieu ve) OR (hieu va)) cau thuc dan tinh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat san ((y nang) OR (ly nang)) xa hoi. ((hieu ve) or (hieu va)) cau thuc dan tinh vai cua te".
• Adding a wildcard symbol may retrieve word variants: thuat san ((y nang) OR (ly nang)) xa hoi. ((hieu ve) or (hieu va)) cau thuc dan tinh vai cua te*.